If you are hit by an underinsured driver, the government steps in and additional underinsured motorist protection (e.g. hit by an out of province/country motorist) is available to all and not expensive.
Jail time for an at-fault driver here is very uncommon but can be applied if serious injury or death results from a driver's conduct. This is quite conceivable with humans or AI, IMO. Who will face jail time as a human driver would in the same scenario?
Hit and run, leaving the scene, is also a criminal offence with potential jail time that a human motorist faces. You would hope this is unlikely with AI, but if it happens a small percentage of the time, who at Waymo faces jail as a human driver would?
I'm talking about edge cases here, not the usual fender bender. But this thread was about policy/regs and that needs to consider crazy edge cases before there are tens of millions of AI drivers on the road.