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Posted by doctoboggan 12/11/2025

Rivian Unveils Custom Silicon, R2 Lidar Roadmap, and Universal Hands Free(riviantrackr.com)
395 points | 647 commentspage 2
modeless 12/12/2025|
I think it makes sense to do an ASIC later, but not now. Chip development is expensive and risky. They ought to at least start selling a product with positive gross margin first.
pm90 12/12/2025|
Its possible that they have tried that and the market isn’t giving them what they need at the price they want. I do mostly agree with you though; its the economics of the car thats gonna supercharge adoption.

EDIT: another commenter mentioned that their platform is used by other companies (VW perhaps?). With that information, it might make more sense to do this.

mrcwinn 12/11/2025||
This is really poor execution. You're taking a complex, low margin vehicle and introducing even more cost and supply chain complexity. On top of that, you're essentially making a proxy bet that more expensive hardware (LIDAR) will beat Tesla's software bet.

It's absolutely fair to criticize Elon for his ridiculous FSD timeline claims, but here we are now evaluating the market: if you have experienced the latest FSD, Waymo's and now Rivian's bet is just so obviously the exact wrong bet.

JumpCrisscross 12/11/2025||
> if you have experienced the latest FSD, Waymo's and now Rivian's bet is just so obviously the exact wrong bet

I have. It’s wild for anyone to say this.

Waymo works. FSD mostly works, and I seriously considered getting a Tesla after borrowing one last week. But it needs to be supervised—this is apparent both in its attention requirement and the one time last week it tried to bolt into a red-lit intersection.

The state of the art is Waymo. The jury is still out on whether cameras only can replicate its success. If it can’t, that safety margin could mean game over for FSD on the insurance or regulatory levels. In that case, Rivian could be No. 2 to Waymo (which will be No. 1 if cameras only doesn’t pan out, given they have infinite money from Google). That’s a good bet.

And if cameras only works, you’ll still have the ultra premium segment Tesla seems to have abandoned and which may be wary of licensing from Waymo.

Rover222 12/11/2025|||
Waymo operates on guardrails, with a lot more human-in-the-loop (remotely) help than most people seem aware of.

Tesla's already have similar capabilities, in a much wider range of roads, in vehicles that cost 80% less to manufacture.

They're both achieving impressive results. But if you read beyond headlines, Tesla is setup for such more more success than Waymo in the next 1-2 years.

JumpCrisscross 12/12/2025|||
> Tesla is setup for such more more success than Waymo in the next 1-2 years

Iff cameras only works. With threshold for "works" beig set by Waymo, since a Robotaxi that's would have been acceptable per se may not be if it's statistically less safe compared to an existing solution.

Waymo also sets the timeline. If cameras only would work, but Waymo scales before it does, Tesla may be forced by regulators to integrate radars and lidars. This nukes their cost advantage, at least in part, though Tesla maintains its manufacturing lead and vertical integration.)

Tesla has a good hand. But Rivian's play makes sense. If cameras only fails, they win on licensing and a temporary monopoly. If cameras only work, they are a less-threatening partner for other car companies than Waymo.

simondotau 12/12/2025||
In the increasingly rare instances where Tesla's solution is making mistakes, it's pretty much never to do with a failure of spatial awareness (sensing) but rather a failure of path planning (decision-making).

The only thing LIDAR can do sense depth, and if it turns out sensing depth using cameras is a solved problem, adding LIDAR doesn't help. It can't read road signs. It can't read road lines. It can't tell if a traffic light is red or green. And it certainly doesn't improve predictions of human drivers.

dzhiurgis 12/12/2025|||
Which begs me the question why Tesla took so long to get here? It's only since v12 it starting to look bearable for supervised use.

The only answer I see is their goal to create global model that works in every part of the world vs single city which is vastly more difficult. After all most drivers really only know how to drive well in their own town and make a lot of mistakes when driving somewhere else.

Rover222 12/12/2025|||
It was only about 2 years ago that they switched from hard coded logic to machine learning (video in, car control out), and this was the beginning of their final path they are committed to now. (building out manufacturing for Cybercab while still finalizing the FSD software is a pretty insane risk that no other company would take)
dzhiurgis 12/12/2025||
That’s the switch for controls, the machine vision was nn from the start.
simondotau 12/12/2025|||
Path planning (decision-making) is by far the most complicated part of self-driving. Waymo vehicles were making plenty of comically stupid mistakes early on, because having sufficient spatial accuracy was never the truly hard part.
KeplerBoy 12/12/2025||||
Sensing depth is pretty important though. Especially in scenarios where vision fails, radar for example works perfectly fine in the thickest of fog.
simondotau 12/12/2025||
In "scenarios where vision fails" the car should not be driving. Period. End of story. It doesn't matter how good radar is in fog, because radar alone is not enough.
KeplerBoy 12/12/2025||
Too bad conditions can change instantly. You can't stop the car at an alpine tunnel exit just because there's heavy fog on the other side of the mountain.
simondotau 12/12/2025||
If the fog is thick enough that you literally can't see the road, you absolutely can and should stop. Most of the time there's still some visibility through fog, and so your speed should be appropriate to the conditions. As the saying goes, "don't drive faster than your headlights."
ra7 12/12/2025|||
> The only thing LIDAR can do sense depth

This is absolutely false. LiDAR is used heavily in object detection. There’s plenty of literature on this. Here’s a few from Waymo:

https://waymo.com/research/streaming-object-detection-for-3-...

https://waymo.com/research/lef-late-to-early-temporal-fusion...

https://waymo.com/research/3d-human-keypoints-estimation-fro...

In fact, LiDAR is a key component for detecting pedestrian keypoints and pose estimation. See https://waymo.com/blog/2022/02/utilizing-key-point-and-pose-...

Here’s an actual example of LiDAR picking up people in the dark well before cameras: https://www.reddit.com/r/waymo/s/U8eq8BEaGA

Not to mention they’re also highly critical for simulation.

> It can't read road signs. It can't read road lines.

Also false. Here’s Waymo’s 5th-gen LiDAR raw point clouds that can even read a logo on a semi truck: https://youtube.com/watch?v=COgEQuqTAug&t=11600s

It seems you’re misinformed about how this sensor is used. The point clouds (plus camera and radar data) are all fed to the models for detection. That makes their detectors much more robust in different lighting and weather conditions than cameras alone.

Rover222 12/12/2025||
I think "sensing depth" and "object detection" are the same things in this debate though
ra7 12/12/2025||
It's just "sensing depth" the same way cameras provide just "pixels". A fused cameras+radars+lidar input provides more robust coverage in a variety of conditions.
simondotau 12/14/2025||
You know it would be even more robust under even more conditions? Putting 80 cameras and 20 LIDAR sensors on the car. Also a dozen infrared heat sensors, a spectrophotometer, and a Doppler radar. More is surely always better. Waymo should do that.
ra7 12/14/2025||
Maybe Tesla should reduce their camera count from 8 to 2 and put them on a swivel like human eyes. Less is surely always better.

I can also make “clever” arguments that are useless.

simondotau 12/14/2025||
Remarkable. You managed to both misunderstand my point and, in drafting your witty riposte, accidentally understand it and adopt it as your own. More isn't objectively better, less isn't objectively better. There's only different strategies and actual real world outcomes.
ra7 12/14/2025||
> More isn't objectively better, less isn't objectively better.

Great, you finally got there. All it took was one round of correcting misinformation about LiDAR and another round of completely useless back-and-forth about sensor count.

The words you’re looking for are necessary and sufficient. Cameras are necessary, but not sufficient.

> There's only different strategies and actual real world outcomes.

Thanks for making my point. Actual real world outcomes are exactly what matter: 125M+ fully autonomous miles versus 0 fully autonomous miles.

simondotau 12/14/2025||
Oh I’m sorry, I didn’t realise you think you’re in a battle of fanboy talking points. Never mind. Not interested.
ra7 12/14/2025||
Highly ironic considering you started this comment chain with a bunch of fanboy talking points and misinformation. Clearly, you’re not interested in being factual. Bye.
ra7 12/12/2025|||
Tesla literally has a human in the driver seat for each and every mile. Their robotaxi which operates on geofenced “guardrails” has a human in the driver seat or passenger seat depending on area of its operation, and also has active remote supervision. That’s direct supervision 100% of the time. It is in no way similar in capability to Waymo.

We’ve been hearing Tesla will “surpass Waymo in the next 1-2 years” from the past 8 years, yet they are nowhere close. It’s always future tense with Tesla and never about the current state.

RivieraKid 12/12/2025||||
My first instinct is also that Rivian's strategy doesn't make sense. Self-driving is a monumentally hard problem, to be successful you need a world-class engineering and research team, resources and time.

I suspect that when Rivian has an L3 product, Waymo will be already offering an L4 package to car manufacturers.

dzhiurgis 12/12/2025|||
It's not camera vs lidar, it's AI vs AI.

Waymo's AI so far has been narrowly focused few cities. Good start, but remains to be seen who will scale out quicker. IMO both will succeed.

Right now if you want a personal car Tesla's FSD is the only option and will remain so for likely a decade. Waymo doesn't seem to be excited about their mission at all. If it moves to Google's graveyard they'll be like "meh" while it's mission critical for Tesla.

senordevnyc 12/12/2025||
This is such a wild take. Waymo is expanding to cities across the country, doing millions of paid rides every month. Meanwhile Tesla's "Robotaxi" is tooling around Austin with a few cars, every one of which has a driver in the front seat. On the personal vehicle side, Tesla hasn't done anything new or interesting in years, and sales are slumping. FSD never seems to actually become good enough to actually be "full self driving", it's just year after year of Tesla stans coming in here to tell us how "the latest version is incredible, actual full self driving is just around the corner!"
dzhiurgis 12/12/2025|||
I see you are here to discuss politics, not technology. Good luck!
senordevnyc 12/14/2025||
Given that I said nothing about politics, I think this is what the kids call telling on yourself.
AnotherGoodName 12/11/2025|||
Your statement on more expensive hardware likely isn't true if you factor in full costs. Lidar gives you things for free with little extra processing (or power) that optical takes extra work to do poorly with higher latency.

Also LIDAR has just plain dropped in price, well over 10x, while nVidia hardware (even the automotive specific variants) have not.

https://cleantechnica.com/2025/03/20/lidars-wicked-cost-drop...

senordevnyc 12/11/2025|||
Waymo is delivering millions of paid rides per month all over the country with no one in the driver's seat. Tesla still can't manage that in one small city without a backup driver in the front.

But yes, just like the dozens of other times I've read this comment for years now, I'm sure "the latest version of FSD" is so groundbreaking, and it's all about to change!

bryanlarsen 12/11/2025|||
> You're taking a complex, low margin vehicle

Taxi services are not low margin. A taxi typically does about 500,000 miles over its lifetime; adding $10,000 to that cost is 2 cents per mile, increasing price by about 1%.

adrr 12/11/2025||
I own FSD, its no where near autonomy.
viburnum 12/11/2025||
Quite the qualification for self-driving: "as long as there are clearly painted lane lines."
japhyr 12/11/2025||
Fully autonomous driving in all conditions in all locations is clearly a hard problem that's still not solved.

I'm very happy with any company that clearly spells out the situations where their tech works, and the situations where it doesn't yet work.

red75prime 12/12/2025|||
I can't find how it will operate. Will it detect a situation where lines are not painted sufficiently clearly, warn you, and disengage? Or will you need to detect where it begins to operate wonky because lines aren't painted sufficiently clearly and to take over? I guess it's the second. It's hands-off, not eyes-off.

Also, I would like to see a car company that is further down the road of full autonomy clearly describing all the long tail scenarios. It's just impossible.

jmtulloss 12/12/2025||
The current Gen 1s will start beeping at you if they can’t see the lines. If you don’t take over quickly it will start slowing down and beeping very insistently.
RivieraKid 12/12/2025|||
I've been saying that it's semi-solved, in the sense that we have a decent idea of how to get there without requiring major breakthroughs. (By "we" I mean Waymo.)
m463 12/11/2025|||
I notice that tesla seems to choose (highlight in blue) the left and/or right lane lines or the car in front of you. But it still seems to work without lines.
octorian 12/12/2025|||
The endless list of "exception" cases is why I'm continuous skeptical about any sort of full-self-driving claims.

Sure, you can cover everything they can think of. But there are so many cases you can't predict, or which don't have an obvious solution, and it often comes down to a human judgement call that doesn't always have a programmatically-clear right answer.

Zee2 12/12/2025|||
That was specifically for their existing Gen2 highway assist expansion. Not the Gen3 custom silicon full autonomy that they were discussing for the rest of the presentation.
pstuart 12/11/2025||
+3.5 million miles out of ~4.x million miles of existing roads -- not too shabby.

Seems like a good start to me, and I'd rather they approach as cautiously as possible.

plebianRube 12/11/2025||
In the future, we could use some sort of traffic management system, were cars which conform to a standard are able to 'link-up' and move as one unit like a train, it would relieve alot of the stop and go and improve flow on congested roads, possibly with denser traffic. I'd bet alot of daily commuters woild subscribe to something like that.
1970-01-01 12/11/2025|
That was planned a very long time ago. It was too early, and we completely squandered it. Now the spectrum allocated for V2V it is gone.

https://www.butzel.com/alert-The-Latest-Development-in-the-S...

teach 12/12/2025||
Yeah, I saw a demo of this in a robotics lab at my local university like 20+ years ago and thought full self-driving was right around the corner.

It will probably EVENTUALLY show up, but I'm thinking it's more like decades away at this point.

ricardobeat 12/11/2025||
Those blue stripes look amazing in a retro-future kind of way. About time cars started getting back some personality.
NickM 12/11/2025|
I don’t think that the production model will look like that, I believe it’s a wrap. Also suspect it’s a bit of a joke on the model being called the R2 (the colors and patterns are reminiscent of R2-D2).
frankfrank13 12/11/2025||
Is there some tight coupling on autonomy + electric cars? Seems the only 2 viable hands-free car companies are Tesla and Rivian. I don't see myself ever getting an electric car, but it doesn't seem like the big car companies are anywhere near this.
jerlam 12/11/2025||
No, there is no coupling between EVs and automation.

Ford BlueCruise and Mercedes Drive Pilot are equipped on some ICE vehicles, and are hands-free driving on (some) highways.

Mercedes Drive Pilot is classified as L3 which is better than Tesla or Rivian.

red75prime 12/12/2025|||
> Mercedes Drive Pilot is classified as L3 which is better than Tesla or Rivian.

Try to find videos where people actually use it. A handful of 1 minute long promotional and car reviewers' videos. It's mostly a marketing move.

jazzyjackson 12/11/2025||||
I know this ain't a bitch-about-bluecruise thread but it's crazy to me they shipped it as is, it disengages silently as a matter of course - only indication is an animation on the speedometer. You basically have to keep your hands in the wheel just in case, not to mention shouting at you to pay attention when you glance over at the radio. Handsfree but keep your eyeballs facing front !
dzhiurgis 12/12/2025|||
They just announced eyes-free bluecruise
dgarrett 12/12/2025|||
> Mercedes Drive Pilot is classified as L3 which is better than Tesla or Rivian.

"DRIVE PILOT can be activated in heavy traffic jams at a speed of 40 MPH or less on a pre-defined freeway network approved by Mercedes-Benz. DRIVE PILOT operates in daytime lighting conditions when inclement weather is not present and in areas where there is not a construction zone." [0]

[0]: https://www.mbusa.com/en/owners/manuals/drive-pilot#2

hartator 12/11/2025|||
I think the shift to EV is inevitable.
colordrops 12/11/2025||
I agree, but it won't happen until EVs get more range.
ok_dad 12/11/2025|||
The range is fine today, the problem is charging infrastructure now. There aren't enough high speed chargers, and we can't build more because of the same reasons we can't build more AI datacenters: power. Tesla can build tons of them because they're backed by large grid batteries that suck up the power peaks from fast charging so that they can install their charging stations anywhere that has somewhat reliable power. If you don't have the batteries to act as a peak shaver, then it's really hard to install high speed charging where people need it most in residential and commercial areas that are already oversubscribed.
colordrops 12/11/2025||
It's not fine for all use cases. There are many people who are holding out because it's either not fine for their main use case, or even just a use case that occurs infrequently, but still important to them.
ok_dad 12/12/2025||
I'd like to see data on the distances people drive on a regular basis. For America where I am from, I think that a vast majority of people could use EVs today with the ranges they have today. I didn't see any EVs with ranges below 200+ miles and most had 260+. If you have to go further than that on a regular basis, I think that most cars won't work for your specific needs, let alone EVs. The whole range argument seems like some FUD to me that was made up by the ICE industry, honestly, because EVs have had these same ranges for a decade now.
colordrops 12/12/2025||
I'm speaking out of personal experience as an EV owner in Los Angeles that takes occasional road trips. It's those occasional road trips that are preventing me from going full EV. And I'm like 99% certain I'm not a tiny minority.
ok_dad 12/12/2025|||
I wonder if there is data out there for this kind of thing. I'd like to see it to see which one of us is correct or if we're both wrong (or right).
iknowstuff 12/11/2025||||
It already happened. 1/3rd of the global car market is EV. Range is not an issue.
colordrops 12/11/2025||
Worthless comment. Of course it's not an issue for city driving. It's an issue for long trips and rural driving. No one said EVs don't serve many use cases. I have one myself.
iknowstuff 12/11/2025||
Worthless human. More range is not needed and mark my words, mainstream EVs will not bother going beyond ~300 miles. Even the 400mi in a model s is a lot. More charging stations maybe, though we have plenty here in CA so roadtrips in a Tesla have never been a problem.
colordrops 12/12/2025||
appreciate the compliment. I'm one of those Californians with a Tesla, and we keep a gas car for certain trips that would be very difficult with a Tesla. I'm not just making something up here. But whatever you say.
5upplied_demand 12/11/2025||||
That has been happening consistently for almost 15 years. https://www.energy.gov/eere/vehicles/articles/fotw-1323-janu...
amanaplanacanal 12/11/2025|||
Better charging infrastructure and faster charging batteries will mitigate some of that.
jedberg 12/11/2025|||
The coupling is more with cost than drive train, but consumers most likely to pay extra for autonomy are the same ones willing to pay extra for electric.

Which is why you see it on the Mercedes ICE vehicle. Because it's a high cost vehicle to start with.

jmtulloss 12/12/2025|||
The reason for this is Rivian and Tesla bet big on software defined platforms… ie every piece of hardware talks to a small number of central computers instead of many independent systems. This gives them a huge leg up in developing software than can actually take all the available input and use it to control all aspects of the vehicle.

Downside is all the buttons are on a screen. But I’ve grudgingly decided it’s worth it for software upgrades.

sofixa 12/11/2025||
No, the only Level 3 self-driving system is Drive Pilot by Mercedes. They have it on the S-Class and EQS sedans, so one ICE/hybrid and one EV.

It even comes with legal liability for the car manufacturer, that's how confident they are in the tech. None of this kind of hopium: https://en.wikipedia.org/wiki/List_of_predictions_for_autono...

simondotau 12/12/2025|||
It's not real L3, it's marketing department L3. Two years after launch it's still only supported in two US states. Now that Mercedes got their headline, it's effectively abandonware.

If it was real L3, Drive Pilot would be considered the vehicle operator for legal purposes. Mercedes would take full responsibility for any driving infringements or collisions that occur during its use. In reality, Mercedes cannot indemnify you from driving infringements, and for collisions they only promise to cover "insurance costs" which probably doesn't include any downstream reputational consequences of making an insurance claim.

iknowstuff 12/11/2025|||
So confident that it only works with a lead car to follow, on select stretches of freeways, below a certain speed, on sunny days
daemonologist 12/11/2025||
The R2(-D2) livery is a fun touch
uberman 12/11/2025||
Why do people what self driving cars at all? I certainly hate the thought of having to pay for any of this. Even if the end product is subscription based, all these feature cost money up front making new cars super expensive.
mike-cardwell 12/11/2025||
I'd love to get in my car and go to sleep for a couple of hours or read a book whilst it drives me somewhere. Imagine if it could even pull over and charge up without any kind of intervention too. You could get in your car, and get a full nights sleep whilst it drive you somewhere 500 miles away.

Also, at some point, I'm probably going to be too old to drive safely, which will restrict my travels. Not if self driving gets to the point where that doesn't matter anymore.

kjkjadksj 12/12/2025||||
Too bad the law says you can’t do this
mike-cardwell 12/12/2025||
Yeah. The tech isn't there yet. The question I was responding to was "Why do people what self driving cars at all". I responded why I want a self driving car.
uberman 12/12/2025||||
Cool and all, but up until companies started putting this stuff in cars they cost $30k. Now the average car is 50k. The average car is now more expensive than my BMW 3 series with the premium package from a few years back. I don't want to pay for your fantasy of going to sleep in your car and waking up someplace new. I dont want to pay for the ability of my car to self park or be summoned to me. Most new features of cars dont interest me in the slightest.
mike-cardwell 12/12/2025|||
> I don't want to pay for your fantasy of going to sleep in your car and waking up someplace new

So vote with your wallet. And take a bus.

uberman 12/12/2025||
You're suggesting that the only alternative to autonomous self-driving cars is public transit?

By the way, I do vote with my wallet. I won't buy a car that has these features. I won't buy a car that serves me ads. I won't buy a car that charges a subscription fee. However, this is becoming increasingly challenging. Most luxury vehicle manufacturers want to pad their bottom lines by charging a premium or worse a subscription for things I (and I suspect many people) don't want.

These premium features ultimately trickle down so every new car must have a rear-view camera and many have LED lighting. Examples of two premium features that now everyone must pay for. My eldest daughter failed her driving test because she used the rear view camera when parallel parking. Yes these cameras are mandated but you fail if you use them. The tail light on an F-150 can cost upwards of $3,000 to replace. A tail light!

My first car, a jeep, came with a bikini top, no doors. the windshield actually folded down without a special tool, and I used a kerosene heater in between the seats when it was cold. Now wranglers come with touch screens, heated steering wheels and cruise control. Apparently they are difficult to find with a manual transmission. I loved mine back in the day but as you say I'll vote with my wallet and will not buy from Stellantis.

I'll happily get my kids a Slate. Of course your mileage may vary and if you want to pay for these premiums then power to you. I just don't want to subsidize your choice.

mike-cardwell 12/12/2025||
> You're suggesting that the only alternative to autonomous self-driving cars is public transit?

No. But hopefully one day. I don't mind if you want to subsidise my choice or not. I want self driving tech to get to the point that it is safer than manually driven cars, and I then want people who want to still drive manually to be slowly priced off the roads and then outright banned from doing it.

My preference is that you stop being allowed to drive manually, and as far as I can see, that's the future, as long as the technology works out.

Izikiel43 12/12/2025|||
Average includes trucks and other stuff which are very above the average and pull it up, because god forbid the avg joe from getting a Honda civic instead of a f150 or above.

Also, inflation is a thing. You can get a new Honda civic for less than 30k$ today, as well as other sedans and small cars.

llbeansandrice 12/11/2025|||
This is a train.

You want a train.

If you don't like sharing space with other people, you want a private room on a train.

These cars and their supporting infrastructure should cost more than a private room on a train because they are less efficient and have more negative externalities than a private room on a train.

jjcm 12/11/2025|||
A train can't take me to the beach. It can't take me camping away from civilization. It can't haul lumber from a hardware store so I can build a treehouse.

I love trains, but let's not pretend there is a perfect Venn diagram of overlap between what their use cases are.

lapetitejort 12/11/2025|||
Trains can take you to the beach and away from civilization. Build a station where you want to go. At one point trains were the most practical way to get to national parks.

How often are you building treehouses that you need to pay hundreds of dollars extra a month to justify the cost, versus a one-time delivery fee?

dzhiurgis 12/11/2025||
If you build train station away from civilization pretty quickly it will be filled with civilization.

Trains are ok for mass transit. Rest of world is for cars.

ryan_lane 12/12/2025||
You must be an American, because plenty of trains exist to bring people to nature elsewhere. You know, when you drive a car to a nature place, you put it into a parking lot, then you are no longer in the car, right? Same works for trains.
dzhiurgis 12/12/2025||
Low density places exist outside america. You should check them out.
ryan_lane 12/12/2025||
I have. A lot of them have trains!
signatoremo 12/12/2025||
A lot of them don’t. What is your point? How should one visit places without train access like this one?

https://maps.app.goo.gl/kgjVaPRdi6zGDQeu6?g_st=ic

llbeansandrice 12/12/2025||
Man I love this silly debate. The original comment just wanted to travel 500 miles to "somewhere" and most instances of "somewhere" that people travel to could be accessed by train.

Also no one has said that no one is allowed to drive ever again anywhere. I'm trying to be generous but the victim complex is crazy.

dzhiurgis 12/12/2025||
Sorry but train-people scare me more than orange-man.
ryan_lane 12/16/2025||
You should get yourself checked out. No one is trying to take your car away.
llbeansandrice 12/11/2025||||
> A train can't take me to the beach

Yes it can!! Why can't a train take you to the beach?

https://www.amtrak.com/top-beach-destinations-by-train

> It can't take me camping away from civilization.

How many vehicle miles do you travel every year? How many of those are to go camping?

> It can't haul lumber from a hardware store so I can build a treehouse.

Have you tried? Like really tried? https://philsturgeon.com/carry-shit-olympics/

> but let's not pretend there is a perfect Venn diagram of overlap between what their use cases are.

I never said anything of the sort and I'm not pretending that at all. You're creating a strawman. The comment I was responding to said this:

> I'd love to get in my car and go to sleep for a couple of hours or read a book whilst it drives me somewhere. Imagine if it could even pull over and charge up without any kind of intervention too. You could get in your car, and get a full nights sleep whilst it drive you somewhere 500 miles away.

That's a train. Most instances of "somewhere" can be accessed by train. Or by a train to do the long miles and then other modes of transit once you're closer.

My overall stance is that there's a lot more overlap between why folks want a super expensive self-driving car and more robust public transit and better support for multi-modal transit. I've not pretended anything like you've claimed.

rootusrootus 12/11/2025||
> Or by a train to do the long miles and then other modes of transit once you're closer

Of your many points in various posts, this is maybe the only point I'm really on board with. Amtrak already supports this, even. My car can drive me to the train and then the train can do the long haul, and at the other end my car will drive me off the train and to the destination.

Still need waaaay more rail routes than we have now, though, so this is a dream for a century from now, not something in my lifetime.

llbeansandrice 12/12/2025||
This isn’t strictly directed at you, but I’m saddened that HN is immediately ready to dream big when it comes to solving hard problems and making the world a better place in spaces like AI, crypto, and technology in general. But suddenly shuts down over things as simple as trains, buses, and bike lanes.

There’s plenty of examples of guerrilla urbanism that I think align closely to the hacker ethos. Even more these problems are very solvable and can net huge gains in metrics without having to “dream for a century”.

> waaaaay more rail routes

It’s actually much simpler, Amtrak just needs right of way along with some other straight forward regulations to help balance freight and transit on America’s railroads.

Amtrak has also been doing great at incremental expansion and brining back (or increasing!) ridership just in the 5 years since the pandemic in a number of areas like Chicago to Milwaukee, and in the PNW.

The defeatist attitude isn’t what I expect from HN. You already found the best piece of actionable advice which is to look for incremental ways you can adjust your life to be different. My wife and I hardly drive anymore. Most of our trips: her work, groceries, restaurants, most leisure activities, etc are now by bike. We live in the suburbs too, a full 10 miles (20-30min drive and across an interstate) from the city’s downtown.

Cars are only perceived as necessary in America bc it is assumed that they are. There are many small and safe ways to shed the car dependence and they’ve all been huge positives to my life. We’re happier, healthier, building more community, spending less money on gas and maintenance. It’s nice.

senordevnyc 12/12/2025||
I live in Manhattan, and don't own a car, so I get where you're coming from. The reality here is that America doesn't like trains and isn't going to build trains in any kind of a timeframe that's helpful to me. I'm about to move to Westchester, but I need to get to the Upper West Side every day. Yes, I can take the train from Westchester, but it goes into Grand Central, so then I need to take another train from there. And I'll have my kid with me.

So my options are:

1. Drive, walk, or bike with my kid to the train station in Westchester, ride to grand central, switch to subway, drop her off at school, then take the subway to my office. Total time about 90 mins.

or

2. Drive 35-45 mins.

I'll be driving.

There's talk of having one of the train lines go into Penn instead of Grand Central, with stops on the Upper West Side! But that'll be a decade or more, if it ever happens, and it won't be relevant to me anymore at that point.

uberman 12/12/2025|||
Are you suggesting that you cant get to Home Depot without a self driving smart car?
mike-cardwell 12/12/2025|||
Not even close
bluGill 12/11/2025|||
It remains to be seen, but there is reason to believe that self driving cars will be enough safer than regular cars that I as a citizen want everyone to have them if you have a car.

I have kids who walk, ride bikes, and I do the same. There are a lot of terrible drivers out there - the average driver who thinks they are better than everyone else is still terrible (yes this includes me - I'm one of the few honest enough to admit I'm not good, but I'm about equal to everyone else)

lowbloodsugar 12/11/2025|||
One day, all personal transport will be AI, and lunatics like me who enjoy performance driving will have special vehicles we drive at a track. Self driving cars are great. That you can’t afford one is just a matter of time.
rootusrootus 12/12/2025||
Could happen. But we still allow horse-drawn carriages on some roads. I think I'll be long dead (and I wouldn't be surprised if everyone in this discussion will be long dead as well) before we kick human drivers off the road.

If we really gave a shit about driving-related fatalities, there is a lot of fruit hanging way lower than replacing the average sober driver.

justinholt 12/11/2025|||
I like approaching it from an accessibility standpoint. I don't need it and I enjoy the act of driving. That said, if I had vision impairment and wanted freedom to travel further from home with no assistance self driving cars make a lot more sense.

The product isn't necessarily "for me", but that doesn't mean it shouldn't exist.

squigz 12/12/2025||
I'm extremely visually impaired. I'd rather see (ha) good public transport. I also sincerely doubt (and hope so) that I'd be legally able to drive a car simply because it has "self-driving" - what if I need to take control of it? What happens if someone gets hurt because of it? Am I liable, even though I don't have a license?
wat10000 12/11/2025|||
Driving can be annoying. I like it in some cases, but it's no fun when there's a ton of traffic, lots of stop lights, etc. I'd love to be able to push a button and let it handle the grunt work in those cases.

Sometimes I want to do something else. Maybe adjust my music, or send a text. If the car can keep me going while I do that, it would be nice.

I live with two people who can't drive. Often I have to take them to things. Tonight I'm going to spend about 90 minutes going, waiting, and coming back, so one of them can do something. It would be great if I could just put them in the car and say, have fun, see you later, and stay home while the car takes them there and back.

rootusrootus 12/12/2025||
Anecdotally, whenever I have to tote someone around who cannot drive, it is nearly universally true that they also cannot get in and out of the car without help, too. So that has to be arranged, a self-driving car won't be able to solve it.
wat10000 12/12/2025||
There are reasons other than physical disability for people to be unable to drive. For example, the person I’m driving tonight can’t drive themselves because they’re too young to have a license.
ricardobeat 12/11/2025|||
Doing long highway drives is effortless. Think cruise control, but you can let go of the wheel.

The hardware necessary for level 2 autonomy is estimated to cost about US$400 in a Tesla. Much higher for companies using Lidar though prices are coming down as well.

kjkjadksj 12/12/2025||
Driving is already effortless. It’s not like you actively think about steering.
readthenotes1 12/11/2025|||
I would like self-driving car for myself, but more so, I would like it for all the other drivers on the road who regularly try to kill me or destroy my car.
cryptoegorophy 12/12/2025|||
Because you haven’t tried it. I want to buy Cadilac ev but the biggest downside is the lack of FSD. Once you go FSD you never go back.
aclatuts 12/11/2025|||
My sister plans to just buy the self driving subscription for the month they go on road trips and thats it. Far better than buying it up front.
fragmede 12/11/2025||
I don't think so. My financial situation isn't hers though, and I don't even own one. I borrowed a friend's for a 550 mile road trip this past weekend and then for a few days after. It's there enough to do the usual daily trips with minimal interaction, so while road trips is the obvious situation for it it's also really nice to have the rest of the time. It sucks that it costs so much when it could be free, but we still live under capitalism so that's just how that one goes.
davej 12/11/2025|||
You sound like someone who doesn't spend 1+ hour every day commuting in traffic. :)
llbeansandrice 12/11/2025|||
The replies to this comment are very telling. Everyone is highlighting various desires and issues with cars:

- Cars are dangerous to people not in cars - Cars require your undivided attention (and even that isn't fool-proof) - Cars are inaccessible: age, eyesight, control operation, etc. - There's a lot of traffic (iow there's a lot of cars)

What people are expressing a desire for is more robust public transit and transportation facilities that protect everyone: peds, drivers, cyclists, etc.

The best way to solve all of these problems, totally ignoring self-driving for a moment, is to reduce the total number of vehicle miles traveled. Reduce the number of car trips. Reduce the length of car trips. If there are less cars, there is less danger from cars. If there are less cars, there is less traffic. The only way to have less cars is to provide alternatives: street cars, bike trails, pedestrian facilities, sub-regional buses and trains, inter-regional trains (or buses).

Literally all of these problems get significantly better when there are less drivers on the road. Trains can provide the inter-regional travel that allows you to work, read, hangout, sleep, etc. without the constant danger of having to watch the road the entire time.

Self-driving cars will certainly be useful, but I think people are really missing the point that the root of the problem is cars specifically. They can (and will!) still be available for people that truly want or need them, but harm reduction is the name of the game. Even changing a portion of your trip from car to something else can make a huge difference! It doesn't have to be door-to-door, it could be that you drive to a park-n-ride. Or you stop driving to the local downtown in the spring, summer, and fall.

Most of the people in this comment section want better public transit. It can be made to work even if the goal is to go skiing or mountain biking once you arrive. Cars need to stop being the default and become the exception. It's cheaper, more efficient, safer, and healthier.

rootusrootus 12/11/2025||
> What people are expressing a desire for is more robust public transit and transportation facilities that protect everyone: peds, drivers, cyclists, etc.

I'm going to take a guess here that you're in a bubble. Most people don't give more than a passing thought to protecting anybody else on the road but themselves and their own loved ones. You could say enlightened self interest means this should extend to random strangers, but I bet that as a practical matter it does not. I'd even go farther and suggest that the largest plurality of people who support public transit want it so that it will take other people off the road, not them.

llbeansandrice 12/12/2025|||
Citation needed.

There’s plenty of evidence that traffic is almost exclusively induced demand and that as you build other facilities and expand existing ones that more people use them. “Just one more lane bro”, etc.

America tends to be car-centric because that’s the only perceived option.

cryptoegorophy 12/12/2025|||
People that want more public transit probably never did public transit. It took me a few horrible interactions on a public transit and some disgusting experience in car share to never support anything “communist”. Specially when you get kids.
m463 12/11/2025||
I think it helps you drive. It takes away the tedium of driving and reduces your workload.

Big wins are: 1) stop-and-go traffic 2) long boring highway trips

infrequent but just as important - emergency braking

That said I absolutely hate that this seems to give tesla the "courage" to remove physical driver controls (like turn signal stalks, drive select stalks, full controls for wipers, lights and defrost)

rootusrootus 12/12/2025||
As an aside, IIRC they put the turn signal stalk back in a recent update. It saves them a few bucks per car to use buttons instead, but there are people who will not buy a Tesla without a turn-signal stalk -- and the loss on that is probably 500x what is saved by not putting in a stalk.
m463 12/12/2025||
do they do this for all cars? S/X, truck, 3/Y?

EDIT: looks like model 3 only and they didn't remove it from the y?

thebeardisred 12/11/2025||
What I'm wondering is that the stack up of licensed processor IP looks like.
lunias 12/12/2025|
As opposed to more tech, I'd prefer (significantly) less mass.
krosaen 12/12/2025|
You probably don't want a long range EV then?
lunias 12/12/2025||
Less mass will yield longer range. I know you're referring to the battery accounting for a large percentage of the weight, but a smaller vehicle will get the same range with a smaller battery, and the weight savings compound. If the vehicle weighs less, then all the components supporting that weight can weigh less as well. Unsprung mass can be reduced significantly. Acceleration, braking, handling, and top speed all improve as a result. Components will also generally cost less, reducing the price of the vehicle and making it cheaper to maintain.
krosaen 12/12/2025||
Interesting, yeah, my instinct is that the sensor weight delta would be negligible but perhaps not.
lunias 12/13/2025||
Fair enough, I guess I'm speaking too generally.
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