My old car has a navigation thing that pops up out of the dashboard. It's not a touchscreen: all control of that is by a four-way button plus a confirm and an exit button on the back of the steering wheel.

The new car has a big flashy touchscreen, but there's no way to interact with it without taking a hand off the wheel and looking down below the dashboard line.

I don't know why they can't at least add button-based navigation to the UI.