I had actually purchased an air conditioning unit that was a takeoff from a track car for $750. It never made it into the car.
I lost the car coming off the straight on a hard left off the banking into the infield. The "instructor" with me had complained on the previous 3 laps that all the cars, including me, were braking too early. He told me that he would tell me when to brake on the wreck lap. He didn't and I realized too late I was in too deep and couldn't make the turn. The instructor deposed that he had never driven a Viper, had received no instructions or training from the instruction school, had just received a call from the instruction school asking if he wanted a free vacation to Las Vegas and do some ride alongs, and didn't think he was supposed to be instructing. I didn't like him. He never asked what my experience was, was very aggressive on the track in his instructions exhorting me to drive aggressively, yelled at me when he thought I was taking to long to get the car on the track (putting on my helmet too slow and fastening my harness) and deposed that he thought I had more experience because my car had harnesses.
After 4 yrs of litigation the attorneys finally filed for summary judgement which the judge granted on the first go without hearing dismissing the actions.