Years ago I get stopped for something or another. IIRC it was a muffler, tail light or something dopey.
The guy riding shotgun started lipping off at the cop. I just looked at him and told him if he wanted to take my passenger out in the woods and teach him a few manners that he was welcome.
(I later caught some flak for that until the guys I fished with heard MY side of the story.)
Anyway, I've always wondered about this scenario.
You are a passenger. The car gets stopped, the driver bails and hotfoots it. You stay in the car still and wait, hands exposed.
What is going to happen to you? You're obviously going to have to answer some questions from a highly pissed off sweaty cop that really isn't in a cheerful mood.
I would imagine you're going to have to break out your ID and have a warrant search run on you. Assuming you're clean, what's going to happen to you?
After all, YOU didn't do anything.