>plane autopilots mostly just help flying straight, the pilot still flies the plane
Mostly, as in that's what they are doing most of the time, then yes. But autopilots can fly a predefined routes. Most commercial aircraft can fly themselves except for take off and the last few hundred feet of landing (thanks to instrument landing systems).
I would be quite happy with a car that could take over once I get to a highway. Getting to the highway is like taking off and getting from the highway to my destination is like landing.
>"Full self driving" is a lie, plain and simple.
Maybe for Tesla, but here's Veritasium[1] taking a ride in a car with no driver at all. It's still limited to where it can go, but I think this will be more prevalent sooner rather than later.