On my last button car, I could control volume and turning on/off the radio without looking, but that was it. With the touchscreen, I do have to glance away but am way faster to get back looking at the road. Most things I just don't need to fiddle with anymore, before I'd need to redirect 3 fans, change a dial to put AC mode on/off, another two sliders to make driver and passenger the same (desired) temp (more or less- would have to change later), etc. Now I just adjust one smart "auto mode" a couple degree depending on what I feel like, then can get more granular in controls if I want in two taps.

With voice control I never have to take my eyes off the road at all.

Lordy I hope not. Cannot imagine having to childproof my car's entertainment system, or make sure I don't sing a trigger word, or try to turn on the defroster to dehumidify the windshield during an intense rain storm where I can barely hear myself think.

Also: I don't want a microphone in my car at all times. Thank you.

Hell no. I'd sooner tear out my own vocal cords than accept this future.

No. No, please, no. I won't buy a car that relies on voice for anything, and I really don't want to rent one either. Wildly inefficient, slow, unpredictable.

Voice makes sense as a third input mode, but it seems like a poor replacement for the controls you need while stressed or time-constrained. In a car the real UX test isn't "can the system eventually understand me?", it's "can I do this eyes-free, in noise, with high confidence, in under a second?" That's why defrost, wipers, volume, and temperature feel fundamentally different from "navigate to X". Touch is fine for discoverability, voice is fine for occasional commands, but safety-critical/high-frequency actions still want dedicated hardware.