So, who takes the liability?
The insurance companies with their phalanxes of clever quants can work out how dangerous each car model is and price it accordingly. Adam Smith's invisible hand can do the rest.
If the insurance companies get greedy and "certainly not conspire" to price high, then the car makers would be free to spin up their own correctly priced insurance companies and take the business in order allow car sales.
[1] Barring malice and probably a dozen other exceptions.
Especially if you are in a demographic the car insurance companies consider risky, you'll get to choose between paying A LOT to dive yourself, or a hell of a lot less to have the car drive you.
I knew it right away that if they announced it now, then they're doing it to get public support and then convince politicians to allow them as soon as possible.
They also wouldn't have announced it if it didn't already work pretty well.They wouldn't have announced it if it still needed 10 more years of work.