I was ripped off by a car dealership so to get even I am going to damage cars until I feel I've caused an equivalent value to what I was ripped off plus cost of performing my plan. Here is my plan:
>First wait a few months so they've forgotten about me
>Build a large, portable slingshot sturdy enough to launch a handful of 1" ball bearings about 50 yards
>Print fake temporary license plate, get a rental car, get a remote controlled magnet to hold fake license plate in place.
The car dealership is conveniently located directly next to a freeway on ramp. The idea is to get a rental car, hide the real license plate with a fake one held on by a magnet that I can remotely switch on/off in case I need to ditch it fast (freeway cameras will capture my plate number otherwise). I will make the large slingshot operable by me while driving, load it up with the ball bearings, and as I'm driving up the freeway on ramp at night I will launch the bearings out. They will spread out and have enough mass/height to break windows, make dents. It won't be anything huge but damage like this on brand new cars will add up. Of course they will have insurance and ability to fix things cheaply so I will assume ~$1,000 of damage each time if I launch 10 ball bearings. I will need to repeat this 6 times to reach equivalent exchange.