Well, yes. But air routes are not at all as congested as highways, and air traffic control keeps traffic out of your way. An autopilot in a plane is established

Well, yes. But air routes are not at all as congested as highways, and air traffic control keeps traffic out of your way. An autopilot in a plane is established technology and suitable for conditions, the other, not at all. Calling experimental lane-keeping technology an "autopilot" is just the wrong terminology and does not increase safety.