I think that self-driving cars should act in the self interest of the owners. It will encourage people to use self-driving cars and decrease road deaths.<p>Also, if you are at a rail yard and see something hurtling toward 5 workmen and can push a fat man in front to protect them, you should refrain. The workmen had the opportunity and duty to take actions to prepare for and prevent rogue train cars. The fat man should not have a duty to be constantly on guard against assault.