the real test of driverless cars comes shortly after they start to become widely used. A driverless car will be forced into a trolley problem situation. That

the real test of driverless cars comes shortly after they start to become widely used. A driverless car will be forced into a trolley problem situation. That is, it will have to choose between hitting two things without the option to hit neither. Expect extreme scrutiny in the ensuing legal case.