That might sound like a strange question, but in fact self-driving cars will have to make hard decisions: when accidents are unavoidable, who should live and who should die? Those choices will be programmed in, but who will guide the programmers?
For more, see my latest article on self-driving cars, this one authored with Grady Johnson, appearing on Fortune: http://fortune.com/2015/02/25/self-driving-cars-the-first-potentially-deadly-robots/.