[Prickle]

Ok, but the iphone isn't remotely the same situation, work load, stress or risk; compared to a car.

I relatively consistently mistype on a touch screen keyboard. That's not too much of an issue.

However, me taking my eyes off the road in a car, (stationary or not) to fiddle with a touchscreen is a major risk. I personally just enjoy the fine tuning I can do with physical controls. And the best part, I don't need to look at the control to use it. With a touch screen, sight is a requirement.

[FeloniousHam]

Just my experience, but I don't futz with the controls when I'm not at a stop. Defrost is the most "complicated" (two taps) action I regularly do, but that's once, and before I start driving.

The risk of the screen is more on the user, IMO. It's not the necessary actions, it's all the fun things you can do, and Tesla doesn't have any of the nanny systems so common in other makes (which I very much appreciate).