> Humanoid robots are at least as hard as useful self-driving cars

A self-driving car only has to do one thing - drive. It's also got a stable wheeled base and only a couple of degrees of freedom - got to steer and regulate it's speed.

Even if the only thing you wanted the humanoid robot to do is drive your car, it'd be massively harder for it since it's got all those degrees of freedom, will be bouncing around in the drivers seat, and presumably doesn't even know how to drive.

If the humanoid is more than a gimick - meant to be general purpose, then it needs an AGI brain and ability to learn for itself. It's not going to be learning in a simulator like your FSD car - it's be learning on the road like your teenage kid.