You are maybe not thinking flexibly enough. That’s why they have a fleet (parallelization) and why they outfitted the cars with sensors before self-driving was

You are maybe not thinking flexibly enough. That’s why they have a fleet (parallelization) and why they outfitted the cars with sensors before self-driving was a thing (so they could simulate decision-making and have it corrected by driver action). Their customers’ feedback absolutely trained their models.