No, they can't have fun this way.
If you mop floors and you have fun by twirling your broom and humming a tune, you're not affecting anyone.
If we give you a gun and the right to shoot people in the head and go home to sleep in your own bed, then we can ask you to lock in a little more than that and not pull over people because it's funny.
Such a negative attitude is incredibly counterproductive.
You want police to have a positive presence in the community. Innocent engagement with a banana car helps with that, doesn't hurt.