Two things I've noticed about the AP display on the touch screen.
The spacing of the two blue parallel lines varies according to the width of the lane. When the lane is narrow, the lines are closer to the image of the vehicle, and vice versa when the lane is wide.
The steering-wheel icon rotates as the physical steering wheel does.
The spacing of the two blue parallel lines varies according to the width of the lane. When the lane is narrow, the lines are closer to the image of the vehicle, and vice versa when the lane is wide.
The steering-wheel icon rotates as the physical steering wheel does.