Obvious? Not to the car! My point is that gathering failing cases like this could be a a simple way to gain confidence in a self-driving system, either from the

Obvious? Not to the car! My point is that gathering failing cases like this could be a a simple way to gain confidence in a self-driving system, either from the perspective of internal development at Tesla, or even for regulation. Imagine if before you were allowed to push an update to road-going cars you had to show that it doesn't crash in any of the simulations of difficult conditions that the Road Safety Authority has prepared. I'd be in favour of such a thing at least. It's not proof, but it doesn't give any false positives.