That's a very clean way of dividing up the data, I'd be curious about those figures too.

I was going to question the relevance of comparing tech-caused accidents with human-caused accidents since, despite the growing evidence that tech is the better driver under normal circumstances, we have this cognitive bias around lower perceived safety when someone/something else is driving. People just want to feel in control, even though they're more likely to crash, and my guess is that this will slow down adoption of self-driving technology more than necessary. But then I realized that evidence like this would probably be the best argument no matter what, so in the end, it makes even more sense to compare those numbers!