If the car is not able to safely operate without constant human involvement then it definitionally requires a person on board.
If losing cellular service causes it to stop, then in emergencies you're pretty much guaranteeing a large number of roadblocks for emergency services, on top of their existing hazards to emergency services when operating in ideal environments.
> Should the car keep going when it is not confident to do so?
See above, re: if your car can't even pull over and park safely on its own it has no business being on the street.
The idea is that remote operators help get the car unstuck, but the car should always be able to avoid collisions on its own. I think these cars are supposed to pull over as well instead of blocking traffic.
Key word here being “supposed to”, of course problems occur all the time. Also once a car gets stuck, pulling over is hard because… it’s stuck.
If losing cellular service causes it to stop, then in emergencies you're pretty much guaranteeing a large number of roadblocks for emergency services, on top of their existing hazards to emergency services when operating in ideal environments.
> Should the car keep going when it is not confident to do so?
See above, re: if your car can't even pull over and park safely on its own it has no business being on the street.