I hear your scepticism, but unfortunately your thinking is exactly what's enabled Tesla to grow as they have. There was a documentary that looked at it impartially and unfortunately there's a lot of legacy debt in making cars and things that are more efficient aren't used because of that legacy debt. When MKBHD did a tour, he looked at the fact that humans are needed for certain things, so I can see them wanting to replace them humans ASAP. Especially as the humans are trying to unionize.