The aircraft autopilot can also fly a route and handle everything from takeoff to landing, but pilots don’t rely on it to do so.

Tesla Autopilot can keep pace with surrounding traffic and stay between marked lines but does not recognise stationary obstacles.

They are very much the same in that they automate the mundane parts of the operation of the vehicle. They are also the same in that they do not know how to handle conditions outside their operating envelope.