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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 4
nathan_compton 12/12/2025|
I cannot give a shit about hands free driving. If I have to pay attention I may as well just drive the damn car.

I will care when they sell the cars without steering wheels.

mtoner23 12/11/2025||
how about they try to make their cars profitably first....
jjtheblunt 12/11/2025||
looks like they're profitable already if counting cars and software on them.

https://rivian.com/newsroom/article/rivian-releases-third-qu...

behnamoh 12/11/2025||
They'd rather make their board and CEO profitable first...
7e 12/11/2025||
No, Waymo is just going to license their tech to normal automakers, like Toyota, and those licensees will win. Rivian is run by a Musk-wannabe but even this stock pump isn’t going to help with his sociopath, multibillion dollar compensation package.
georgeburdell 12/11/2025||
The CEO is different from Musk in a few key ways

1. He has a STEM PhD (from MIT)

2. He is conservative in what he discloses

3. Not outspoken or political

IMO one of Rivian’s benefits is its image as the anti-Tesla

darth_avocado 12/11/2025|||
What stock pump, its cratered on the news.
SonOfKyuss 12/11/2025||
That is curious. The market must not have faith in their ability to execute on their plans
darth_avocado 12/11/2025||
The market wants them to sell the $40k cars asap. All the other side quests are distractions. When they spun off their electric bike side project, the stock went up.
dmix 12/11/2025||
Adding LIDAR would probably turn a $40k car a $70k car as well.
TulliusCicero 12/11/2025||
Incendiary language aside, this does seem pretty likely to me. Waymo has already talked about wanting to license their driver for personally owned cars eventually; it just doesn't make sense for them to do so until they can cover more of the country (or countries). The more areas they cover, and especially when they can cover various popular freeways connecting different metro areas, the more it'll make sense for them to start partnering with automakers to sell the technology to consumers.
cyberax 12/11/2025||
Yet no AndoidAuto. Pass.
idontwantthis 12/11/2025||
Can anyone explain why RIVN is down 8% after this announcement? Were investors expecting hands free handjobs or something?
spankalee 12/11/2025||
I hold some RIVN and I'm wondering why they're spending resources on custom silicon instead of using something off-the-shelf. What is their advantage here? Can they hire the right people? Can they ship enough units to pay for it?

Those are my bearish questions. On the bullish side, the VW deal shows that they're willing and able to license part of their platform, so possibly have a big chance to recoup costs and maybe turn a profit just on that side, which justifies a big software + autonomy investment.

ssl-3 12/11/2025|||
If their idea is both novel and useful, and if it actually works, and they can actually produce it, then: They can sell it to other automakers.

(GM has made a lot of cars with their own transmissions. And at various times, they've supplied -lots- of them to other automakers all over the world. They've made a lot of money doing this.

Someone's gotta build the machine vision/control systems for all of these self-driving cars; that someone may well be Rivian.

It's not as sexy as something like a new convertible might be, or a $40k self-driving electric car, and a consumer might not even know that the new car in their driveway has expensive Rivian parts buried inside, but that future can be very profitable for them.)

1970-01-01 12/11/2025||||
>On the bullish side, the VW deal

Oh, I think everyone missed this. Rivian is betting Elon made a big mistake by designing FSD to be strictly for Tesla. Rivian are doing FSD to license it out to other manufacturers. They're planning to open a new market.

RivieraKid 12/12/2025|||
But how could they beat Waymo or Tesla? At some point, these companies will offer an L4 package to car makers.
idontwantthis 12/11/2025||||
I was just thinking about this recently. It doesn’t seem to make sense for each brand to have its own self driving implementation.
deaux 12/12/2025|||
Who cares about Tesla, the comparison here is Waymo who has already been doing this for much longer.
vrinsd 12/13/2025||||
Frankly, the "need" for custom silicon seems self-imposed, with the idea of appearing to be a technology company first rather than a car / vehicle company.

Cruise automation was also for years working on custom silicon, I knew people there. Many people working on the custom devices didn't really believe in the mission statement either, but they were paid well, and got to do fun work, so they took the job.

What makes Rivian, or Tesla better at making the "normal" car pieces compared to Toyota, or Honda? The answer is they're really not better at those things and quite worse typically ; bad fit and finish, rattles, corroding suspension components, difficult to buy replacement parts, etc.

If these companies were truly about making electric cars available to all, a partnership with a car company that knows how to do the "regular car stuff" makes a LOT more sense.

Instead you have these companies that might be innovative in the drive train, electronics, batteries, and co-packaging who have to learn all the "hard" stuff normal car companies have been doing for a 100-years.

Now, instead of moving into a partnership with a regular car company, they're becoming hardware/software organizations making custom silicon with custom software.

Even doing custom silicon and the associated software takes YEARS of expertise to do it and not have a 1000 warts, not withtsanding going into a MOVING VEHICLE where the risks of making mistakes is life and limb.

So, my conclusion is this is more fancy smoke and mirrors to impress investors and the general public, but not in the best interest of end-users (people who buy vehicles to use as transportation).

behnamoh 12/11/2025|||
Fair point. I think they wanted to sound super futuristic (they often borrow a page from Apple's book) but they forgot they're not Apple.
doctoboggan 12/11/2025|||
Maybe they think custom silicon is biting off more than they can chew, coming at a time when they need to focus on R2 production and scale-up.
hnburnsy 12/11/2025|||
They just told potential buyers to not buy an outdated Gen2 or an early R2, assuming it is not delayed.
vhodges 12/11/2025|||
It could be that Gen 3 shipping late 2026 is a concession that R2 might be delayed until then.

Personally I think they will ship R2 Gen 2 vehicles to the early adopters that are less concerned with ADAS.

My R2 reservation is very late (I had to redo it for reasons) so I probably won't be able to order one until it's available anyways.

colechristensen 12/11/2025|||
Excessive hype leading up to selling the news, happens all the time.
nrjames 12/11/2025||
“Buy the rumors and sell the news.” Just typical market stuff.
idontwantthis 12/12/2025||
Now it almost reached $20 lol.
Rover222 12/12/2025||
Any company adding fancy hardware (beyond good cameras and inference chips) to achieve self driving is on the wrong track at this point. Software is what will win this game.

Of course, Waymo has achieved good results with A LOT of fancy hardware. But it's hard to see how they stand a chance against Cybercab mass production (probably behind schedule, but eventually).

I think Rivian has the best-looking line of EVs out there. Maybe they will be able to come from behind in self-driving tech. But this big reveal is not that promising, IMO.

horsawlarway 12/12/2025|
An alternate take here:

The "fancy" hardware is going to get dirt cheap, and in a game where you're asking your customer to trust you with their lives, reliability is going to win. Combine that with time to market, and Tesla feels like a pretty clear "risky bet" at best... Maybe they make it work, but they have to do it before the other companies make lidar cheap, and prices have fallen dramatically over the past 10 years, for much better hardware.

Rover222 12/12/2025||
Yeah, that is all reasonable. I think the jury is still out on if sensor fusion can really get far enough up the march of nines (will it work in 99.99 percent of scenarios)? Karpathy has given some good interviews about why Tesla ditched the sensor fusion approach and switched to vision-only.

Same can be said for vision-only, of course. Maybe it won't every quite get to 99.99.

orliesaurus 12/11/2025||
Watching this unfold... I keep thinking about the supply chain... how many rare minerals go into this custom silicon?

ALSO what happens when the first generation hits end-of-life... will there be a clear path to recycling? I want to believe these platforms will last more than a subscription cycle...

BUT I guess we won't know until we see a teardown...

spankalee 12/11/2025||
Why would more minerals go into custom silicon than off-the-shelf silicon? How would recycling be any different?
orliesaurus 12/11/2025||
not "more"
porphyra 12/11/2025||
typical automotive 905 nm lidars are just CMOS chips similar to cameras and regular computer chips
porphyra 12/11/2025|
Rivians have been spotted with giant Velodyne VLS-128 "Alpha Puck"s since several years ago [1]. But from last I checked, Rivian's ADAS is still struggling with ping-ponging in lanes on curved stretches, and it only works on a small set of pre-mapped highways. Highly doubtful that "universal hands free" is coming.

[1] https://www.reddit.com/r/SelfDrivingCars/comments/mqijd2/riv...

Zee2 12/12/2025||
The ping-ponging is certainly a Gen1 problem. (My Gen1 does this.) Gen1 was essentially an off-the-shelf Mobileye unit, and the performance was, as expected, not good.

Gen2 autonomy stack is completely unrelated to Gen1, and from what I hear is a completely different level of reliability.

(also - this presentation covered yet another, unrelated, gen3 autonomy stack, which shares none of the hardware or models with the existing gen2 stack, either.)

typewithrhythm 12/11/2025||
The big lidars are for ground truth collection. They get used in projects ranging from autonomous development all the way down to budget adaptive cruise control or parking sensor benchmarking.