Physical controls serve double purpose. When you are reaching for the button, you first touch it with your fingers without pressing. This allows you to target t

Physical controls serve double purpose. When you are reaching for the button, you first touch it with your fingers without pressing. This allows you to target the right button without pressing it, and without focusing your eyes on it. Touch controls will trigger every time you touch it, so you can not find it by touch and then press it, thing just doesn't work like that. That steals your attention away from the road and into the screen.