Thank God for this, anytime I've had to use a touch screen while driving I've felt it's stolen so much of my visual attention that it's amazing I don't hit some

Thank God for this, anytime I've had to use a touch screen while driving I've felt it's stolen so much of my visual attention that it's amazing I don't hit something. In contrast a physical knob can be used purely by touch without ever having to take my eyes off the road.