Tesla Enhanced Autopilot is really not much different from the system that is now offered by Volvo in some models, and is called Pilot Assist. Here is a description from Volvo:
"Note: Pilot Assist is designed to be a supplementary driving aid and cannot cover all driving situations, traffic, weather and/or road conditions. Pilot Assist is not intended to replace the driver's attention and judgment. Pilot Assist must only be used where there are clearly visible traffic lane side marker lines on both sides of the current traffic lane. In other circumstances there is an increased risk of collision with surrounding obstacles that are not detected by the system. The driver is always responsible for steering the vehicle and maintaining a suitable speed and distance to the vehicle ahead and must intervene if necessary, even if Pilot Assist is being used.
Pilot Assist does not react to people or animals, or small vehicles such as bicycles and motorcycles. It also does not react to low trailers, slow moving, parked or approaching vehicles, or stationary objects. Do not use Pilot Assist in demanding driving conditions such as city driving or other heavy traffic situations, in slippery conditions, when there is a great deal of water or slush on the road, during heavy rain or snow, in poor visibility, on winding roads or on highway ramps."
Some people have used similar defeat methods (like an orange) in Volvos to avoid keeping hands on the steering wheel.