Had he done it dressed in civvies, and if it was consensual including the car’s owner, nobody would have cared. This is one seriously kinky occifer, however.
I’m betting that he was officially on duty during this encounter. I think that is what got him into trouble since it would be very difficult to explain to the good tax paying citizens what their local law enforcement does on duty. If he was off duty and still with his take home car, I bet he wouldn’t have lost his job. Just a thought.
What about a charge of indecent exposure?