You could add the public shame of driving around with a sticker for a couple of days and the hassle of having to deal with a problem which could have been prevented in the first place. It would have to be enough to teach them that what they are doing is wrong because if they barely feel it financially then they won't even care about what they are doing. I'm not upset about the $10-$30 possible cost of repairs but more-so about their complete and utter disrespect and disregard for my property. They should not be allowed to get away with something like that.

