If the car that did a hit-and-run was operated autonomously the insurance of the maker of that car should pay. Otherwise it's a human and the situation falls into the bucket of what we already have today.
So yes, carmakers would pay in a hit-and-run.
> If the car that did a hit-and-run was operated autonomously the insurance of the maker of that car should pay
Why? That's not their fault. If a car hits and runs my uninsured bicycle, the manufacturer isn't liable. (My personal umbrella or other insurance, on the other hand, may cover it.)