>>106878945
That's what the safety margins are for. Spacing, speed limits, etc. If a car drops off the network then its local fallbacks will kick in, and the master server will be easily extrapolate its last known location with those local fallbacks to orchestrate recovery vectors. There would of course be a problems if localiized network failure + brake failure + accelerator failure all at once, and then you would need AI in that case I guess, but the odds of that occuring would still offset the colossal meatbag failure rate involving even working machines with no faults.
Ideally we wouldn't even have 'cars' in such a scenario though, and everything would be trams on rails or something