My neighbor who lives directly across the street from me, often parks his car or truck in front of or behind our already parked vehicle(s) in front of my home. The space is just enough room for one large and one compact size vehicle. He always either pulls up too close practically lifting the rear end of our vehicle hitting our bumper or backs into our vehicle. I've seen our vehicle(s) bounce forwards when he makes contact. He never then moves back he just leaves his vehicle as is with not so much as an "I'm sorry". I have seen him do this from my window. Although I have asked him in the past not to park too close to our cars, I don't always say anything because he has been a long time neighbor. How bad do damages have to be before I can call police?