Fuck. Screens. In. Cars.
I know my buttons and dials by heart, I reach and touch and control them without looking at them.
I used to be able to fire off SMS messages on my phone while driving, without looking at the screen, because I knew my contact list and keyboards had that little dimple for feeling where 5 is (like your numpad does, if you're not too hipster to go without).
Sure, sometimes I got it wrong and texted something weird or to the wrong person, but by far, it was successful. Maybe it's just me, but I've still not been successful in learning how to write on a touchscreen keyboard, sure, I can type a message or using that swipey kinda thing, but I still have to look where I'm touching, no tactility, it's terrible.