Re: 1. above, who do we sue when the autopilot kills someone? The owner of the vehicle? The manufacturer? The driver behind the wheel (if there is one and it's not the same as the owner)?
That is an area that is still being debated. I suspect it will depend on the level of autonomy the car claims to provide. If it is level 5, and perhaps doesn't even include a steering wheel or other means of controlling the vehicle, then there would be no rational basis to hold anyone inside liable for failure. If, on the other hand, it is level 3 or 4, and does provide a steering wheel, and prominently informs the user that they are ultimately responsible for the vehicle, then the driver would be liable in this case.
This technology is still evolving, though, and the law will need to be adjusted accordingly.
Ideally, every self-driving car would have secondary insurance baked into its price. If someone dies, it's an insurance payout of a standardized amount.
I don't think the plaintiff's bar is going to allow standardized payouts on deaths or injuries. That would ruin their business model, and they have a lot of influence. The question will be whether the inevitable losses due to jury awards can be sustained by any of the manufacturers.
This technology is still evolving, though, and the law will need to be adjusted accordingly.