Getting quite philosophical here, but this is a philosophical disccusion. I think different humans would have different “instinctual” reactions. And I believe we often judge a persons morality by those instincts.
I think you would agree with this. You may disagree that humans, unlike animals, can shape or change their instincts (as we can our habits.)
It’s not a philosophical discussion. It’s a practical discussion. The practical reason we want self driving cars is for them to be better drivers than us. Looking further down than we do, undistracted, not tired, not in a bad mood, making faster better decisions than us, doing a better job of never getting in a Trolley in the first place.