This is why I really hate people around my age. They do stupid shit like this.

Ok, file the report with your witnesses to a REAL POLICE OFFICER ASAP. Bring the witnesses. He will have them on file. Yeah, you have a new car. I don't care who bought it for you, it's new, and it does not deserve to be abused by some stupid kid in his camry. I wouldn't result to violence, but I would seriously screw with him in random ways such as pulling off the registration, loosening bolts so his car rattles, loosening bolts that hold the bumper on, pulling off spark plug wires so it runs like crap, etc. I really wouldn't try anything actually. I'd like this settled legally.

About the brake fluid thing, someone did it to me for no reason. I didn't know it was clear, so I thought it was water.