That sucks. I dont think you should do anything too drastic...maybe not even tell him off because that will lead to more problems, maybe involving the Camaro...remember, you're stuck living next to him...
I had just washed the RS and pulled her into the garage, the ZL1 was still on the driveway to be washed so I went inside to eat before continuing. I walk out to find my neighbors 7 year old daughter and four of her friends sitting on my driveway about 2 feet from the car
I asked them to please play over in the grass (still my property) they stared at me blankly and just sat there. My neighbor sees this happening, looks at me and walks inside. So, I grabbed the hose, and proceeded to walk over to the car...the girls got the message and ran off