Obviously it will have to have some contrived legal function…

Watching car chases in movies these days I keep wondering, could a self-driving car do better? Especially if in the future it knows where all the other vehicles are, because they are all using the same digital infrastructure. The car could even alert other cars to back off for their own safety.

Brake fail mode?
Ambulance mode?

Meanwhile, and more seriously, I would like to see an evacuation mode, where all vehicles get routed to the least congested roads, and cannot do anything to impede others. You don’t want to be stuck in traffic when a tsunami is coming!