What can I do about this situation?

Me and my boyfriend have been living here two years now and haven't had any problems with neghibors...About four months ago a new neghibor moved in and has been haring me ever since. I don't know what type of grudge they have against us being that we don't know eachother personally and I stay to my own and I'm not going to change that... Well I started ignoring them 4 months ago when they would deliberately do stuff in front of my hoouse, skidding there tires, playing their loud music in front on my house, other padantic things. Well we have two cars on the street and they park there car a couple feet away from ours. I have no problem with that. However lately I notice their guests are getting closer and closer to our vehicle. They have a garage that they don't park in and have guests over that park on the street as well when they already have three cars as it is. WELL NOW THE GUEST PARKS IN THE MIDDLE OF OUR CAR AND THERE CAR HORIZONtally causes the result blocking my car in that i have no other choice but move my other car to get out. So I check my car daily because they're only an inch away from my vehicle. I'm not going to stop checking my car because of them. Well today I went to go check my car and the neghibor responded crazy, he went over to my car when i went in the house and was checking my car. I thought that was very strange and shortly after skidded his tires going 60 around the coldesac. Everytime I look at my car his wife and him go check my car. I don't get that. Its my property, so why are they worried if I'm looking at it? We can't say anything to the owner because this is company property and the person in charge is best friends with out neghibor so they can do whatever they want and we can't do nothing except in the event they actually hit the car and then they might fire hime and we would lose the house because he is provided housing as part of his salary. I don't know what to do i ignore all there stupid things they do for attention. I can't ignore the fact they could possibly damage my car. I need to check my car daily just to make sure there is no damage and if they were that worried about me looking at "my car" why don't they move their guest car in the dozen of free space by there house. I can't talk to him or his wife because they would just get madder then they already are. Quite frankly I'm concerned with the safety of myself and my pet. I treat others the way i want to be treated. I never, look, talk, or do anything towards them, I never even go near their house so they have no reason to act this way.