You joke, but this isn't a terrible suggestion. Mercedes has the best answer, in my opinion. Speed limited, carefully controlled environments, full liability resting on the manufacturer. I really don't like how Tesla is foisting off all the beta testing on their customers, pushing that risk to them and other people on (or near) the road, and then also giving them 100% of the liability too.

The incentives are misaligned. Tesla should want to make the software better not just to attract some more customers, but because if they screw it up they're going to be on the hook.