[frankosaurus]

IMO, much worse than touch screen buttons is touch screen glare.

Driving westward in the mornings, sunlight is reflected directly off my car's touch screen into my eyes.

Everything on the dash needs to be matte -- it's a safety issue.

[jrootabega]

I'd say anything in the car, really, but mostly the stuff in front of your eyes. My car has some chrome-like trim on the steering wheel, gear shift, etc. (It's a cheap car, so this is not just a case of it being luxury trim.) The sun occasionally hits them at the right angle to blast straight into my eyes. It's not frequent, but in the wrong circumstances it could cause an accident. Even once is unacceptable.