They effectively are answering questions like "is this road closed", or "is the object in front of me a solid object or a weird shadow".
These are not the sort of questions that US driver's license is really related to, it's not things like "can I legally turn right on red at this intersection".
Do we require a driver's license to solve Google reCapture questions like "what squares have a bike in them"? Because the waymo stuff is closer to image classification than driving.
Driver's licenses are legal constructs. The DMV certifies self-driving cars as able to drive on the road differently, and sure, those two different processes are different.
I really don't get the point you're trying to make here.
Elons cars are already driving by themselves against the conditions they are licensed for, causing accidents and the liability falls to the drivers.
Aka, licensing means absolutely nothing. Specially today.