I know its probably best not to escalate bad feelings with neighbours but if it was my car then i would be absolutely fuming . Ive worked and paid for it and its not parked illegaly What right does he have. None what so ever. Karma may happen but for me that isnt enough. He either pays for the damage or he pays another way. If he gets away with it he is sure to do it again to someone else and not nescessarily a neighbour.