An autopilot does not have to outperform a human driver in every imaginable situation as long as we make smart tradeoffs regarding what the machine can and cann

An autopilot does not have to outperform a human driver in every imaginable situation as long as we make smart tradeoffs regarding what the machine can and cannot deal with and there are still significant advantages over humans in the managable common case. There may not be a solution in sight for making robots deal with badly marked roads for example, but we might be able to just sidestep the problem with better road markings or more conservative handover-to-human protocols in areas with improperly marked roads.