I have. I'll admit this is rare, but one time I paid the city to put up some no parking signs the day I was moving so that the moving truck would be guaranteed

I have. I'll admit this is rare, but one time I paid the city to put up some no parking signs the day I was moving so that the moving truck would be guaranteed to have a place to park. (This is apparently normal in Los Angeles.) When the morning came and one of the spots in front of my building had a car in front of it, I called the police to have it towed. Since the moving truck hadn't arrived, the cop actually went to my neighbor's buildings and checked to see if the owner was home. (He didn't know who it belonged to, so he checked a few different buildings.) He was going to let them move their car instead of having it towed. But as luck would have it, he couldn't find the owner, so he had it towed. I can't believe he went to the trouble, and had it been my car, I would have really appreciated it.