Re: And of course the moral issue...
"So, all the autonomous systems need to do is to show that they're safer than these current figures. "
The critical factor is injury severity as this drives the vast majority of premiums. Deaths are cheap (which is why in a lot of countries if someone runs you over and you're injured, they'll back the car over you to make sure you're dead)
FWIW the single largest category of insurance claim is summarised as "reversed into another car in supermarket car park" - but these are cheap. The most expensive type are "medium-speed collision" as this is where long-term injuries come in.
I agree that the insurance industry will drive mass adoption of vehicle automation - and I believe it will happen remarkably quickly when it happens.