I hate stuff like this.. I had a similar problem afew years ago. Was parked along the seafront eating some chips with the girlfriend and three drunk men Walked towards my car and started pouring beer over my bonnet and laughing. (I was only 17 at the time) not going to lie I was abit scared but I guess adrenaline kicked in and I ended up kicking the absolute pancakes out of two of them with the third making a hasty retreat! I guess I was just lucky that they were drunk and couldn't throw a straight punch otherwise things could of been a lot worse for me! People like this boil my blood, probably never had to do a days work in their life, never mind own and maintain a car!!! Rant over