When I’m driving, it’s actually unsafe for my car to be operated in that way. It’s hard to generalize and say, buttons are always easy and good, and touchscreens are difficult and bad, or vice versa. Buttons tend to offer you a really limited range of possibilities in terms of what you can do. Maybe that simplicity of limiting our field of choices offers more safety in certain situations.

Or maybe being able to consistently and reliably operate the thing without taking your eyes off the road has something to do with it? Hmm... Yes, this is really hard to generalize.