In some ways the hero here is the store and especially the clerk who refused to be intimidated by the cops trying to cover for their buddy.
The cop should have both criminal and civil action against him. His son misrepresented what happened (probably told Daddy that the other car hit him in order to cover up for the damage to his car. But if it wasn’t serious damage, why did he do that?) Daddy is the one at fault for simply taking his son at his word instead of first investigating to see if his son was lying to him.
Daddy should be busted big time and then Daddy should bust his son even bigger time.
Absolutely. Betcha he was threatened, too. Maybe not outright, but subtly.