Germany has developed a set of ethical guidelines for self-driving cars

This question of who a vehicle should kill when placed in a situation where every outcome would end in death is often called the "Trolley problem." It's an ethical debate that's lasted more than 60 years: Ethicists riddle each other with questions of whether it's excusable to kill two elderly people to save one child, or save a pregnant woman while killing a man and a child, and on and on. MIT even made a game to test your own ethical predisposition in the situation.