The faulty car should sacrifice itself!
For two driverless cars to get into a situation where they are on a single-track road (otherwise they could just switch lanes) with an unsurvivable drop on one side and an unmountable slope or wall on the other, yet be travelling fast enough that a head-on collision would be fatal even with full brakes applied by both vehicles from the moment they entered each others field of view - at least one car has to be seriously broken!
Biting the hand that feeds IT
