[scohesc]

Honestly the hybrid physical controls to control a screen is probably the best option. You don't have to visually process what's on teh screen, where to touch, etc. each time.

Eventually I'd imagine you'd get the navigation down to muscle memory like typing on a keyboard - knowing exactly where each option is and where to click or turn the nav button thingy.

Have fun trying to blind-touch a screen when you're on a bumpy road trying to turn the windshield wipers on! :P

Who knows, maybe we're the old ones and the younger generation have all this figured out in their heads already!