This gets near something I was thinking about. Most of the numbers seem to assume that injuries, injury severity, and deaths are all some fixed proportion of each other. But is that really true in the context of self-driving cars of all types?

It seems reasonable that the deaths and major injuries come highly disproportionally from excessively high speed, slow reaction times at such speeds, going much too fast for conditions even at lower absolute speeds. What if even the not very good self-driving cars are much better at avoiding the base conditions that result in accidents leading to deaths, even if they aren't so good at avoiding lower-speed fender-benders?

If that were true, what would that mean to our adoption of them? Maybe even the less-great ones are better overall. Especially if the cars are owned by the company, so the costs of any such minor fender-benders are all on them.

If that's the case, maybe Tesla's camera-only system is fairly good actually, especially if it saves enough money to make them more widespread. Or maybe Waymo will get the costs of their more advanced sensors down faster and they'll end up more economical overall first. They certainly seem to be doing better at getting bigger faster in any case.