But according to Mehler, problems arise when the system needs clarification of what the driver wants, which often happens while they're trying to feed an address into a navigation system.
Which is why every GPS system I've ever used starts off with a disclaimer that tells you not to program the thing while you're driving. I travel for a living so the choice isn't whether I want a screen or not. It's whether the GPS is telling me directions out loud or I'm trying to read them off a piece of paper when I'm driving. And the rental car companies seem to think that the proper place for a GPS is somewhere down at the passenger's feet, so I bring my own and stick it on the windshield where it's in my peripheral vision. And I don't answer the phone if I'm driving.
If it's "smart" it should be smart enough not to pester you when you're trying to drive. It's not that we need smarter cars, we need smarter people.