Self driving vehicles were originally funded by DARPA with the idea to use them in combat. Now self driving vehicles are our best hope to significantly reduce road kills. And that will generate a deficit in organ donors. Ethics are complicated.
Well, self driving cars will/might make well over a third of the workforce redundant (the brother of my wife is a driver, that makes it personal for me), I think that this has the potential to create major tensions within society. My point is that innovations have the potential to be applied in different contexts. So what?