Thanks for advice guys. I will defiantly do things different next year. What made me mad was giving the first 8 cars more than one time down the track, but since their computer wasn't working and they where just doing brackets with use of a cell phone camera then my son being car 49 out of 50, they only gave it one shot and it malfunctioned.That was the end of that. They said they weren't going to let him try again. Another pack said that he was more than welcome to come race with them in the summer to see what it does. Perhaps we will go do that to see what the car should had done.