My first drive with auto pilot tried to follow into the back of a stopped car in a turning lane and randomly had phantom breaking issues like going under overpasses.

Not to mention there are things most people do defensively while driving that autopilot doesn't: anticipate a vehicle coming into my lane by both looking at the wheel position and the lateral movement. Autopilot ignores those pieces of information and data until it's in basically in your lane.

Personally I feel I have to be more on guard and attentive with it on because I know their are fatal bugs.