This isn't about response time, but about what you can do *without looking*. Everything I generally need to do while driving I can do without using the touch s

This isn't about response time, but about what you can do *without looking*. Everything I generally need to do while driving I can do without using the touch screen. Being experienced with my car I can do it purely by touch, no looking *at all*. We make a big issue about hands-free use of phones while driving--other than for a new driver I do not believe that matters. I learned on stick, that most certainly isn't hands-free but nobody says it's unsafe. What's actually important is that driver tasks be eyes-free and concentration-free. (And, yes, once you've learned stick is concentration-free.) And hands-free doesn't eliminate the problem of people taking phone calls that require thought--that's what is actually dangerous. I don't give the slightest hoot about the response time of the controls so long as they count activations independent of the response time. (I click a control 5 times, I care that it actually moved the relevant value 5 but if it takes a second per click to acknowledge that's irrelevant. I'm unlikely to even look at the result.)