I understand what you are saying and I think it can safely be summed up as, "The rules are the way they are because it would be too difficult to evaluate situations otherwise".
I do completely disagree with the second situation, I can somewhat get your point regarding the hummingbird as really its just some shitty chase and nothing can really happen, but at the same time, if safe zones didn't exist, my friends could hop in a Pawnee or ghost hawk and destroy the guy I'm chasing. But regarding being in the gunner of a vehicle while someone drives you to the safe zone, this presents m