Oh, how we miss the trolley problem. There's a runaway trolley plunging towards a widow and five orphans, but if you pull the lever to divert it, you will hit Mr Elon Musk. Which do you choose?
Not long ago, that diabolical choice was the hardest moral question a technologist was likely to face over the course of a typical day. (And it was utterly hypothetical, unless you were building autonomous vehicles.)