Tesla autopilot in its current production form is NOT self-driving, and Tesla doesn't claim it is. It's L2 autonomy, adaptive cruise control with lane keeping (and traffic signal recognition in newer models). Driver attention is still required at all times.

The marketing name is unfortunate, and leads to endless confusion in the media and the public.

Edit: why the downvotes? I drive a Tesla, I use the system responsibly and nothing I've said is untrue.