My suggestion is to put responses (like roadworks "Thanks"/ "Still there?") side by side as when its in list view the finger is bouncing up and down with the motion of the car and I always need to focus a bit more than I like on the touch screen vs looking at the road. Having it in a left/right view you would eliminate the potential of a wrong input as the motion of the car doesn't affect it (unless you are in heavy cornering, by when it's probably wise to have both hands on the wheel ;-) )
cheers
// Johan