Although I'm pretty sure only the manufacturer has access to this data (as part of their copyright on the car), so it would take a warrant for law enforcement to get it. I don't have proof of that, but I would guess that's why you don't hear about it more. It's only used when absolutely necessary.
I was reading a recent insurance case where the driver staged and accident, but the black box indicated what really happened, and the driver withdrew the claim when presented with the evidence.
Widespread data logging including dash cams is going to improve driver behaviour. Even some cyclists are wearing 'dashcams' and this will no doubt improve treatment of all cyclists, even if overall penetration is low.
The ambiguity between automatic/automobile/autonomous really makes me hope a better word surfaces.
Self-driving car is a bit too long.
Maybe nowadays car will be demoted to semimobile, or Human Driven Car.
"We will pay for any accidents caused" means "this will not cause accidents". Because no company would do that unless they were sure it wasn't going to happen. Just like when Google gives $100,000 for bugs in Chrome. They wouldn't say that unless they were sure there were no or relatively few bugs.
Not only is that a marketing win, potentially reducing accidents and saving costs for owners... if you jump forward many years of Google (or other) defending owners in court you would reach a point even judges would be biased to believe that the auto-driven car could not have caused an accident, further disadvantaging non-auto cars in the market.