One time I happened across a suspiciously roadkilled moose. I was there before the flies were. I would have had no qualms about eating it but alas I was driving a rental and while I could have butchered it with a box cutter I would have had nothing to do with the meat.

FYI the reason you don't generally want to eat roadkill is that the trauma and blood clotting does something bad to the meat quality. I don't know the exact details but that's what I've been told.