Chris - EJ ran the car at the Regionals out in California and won the 10.5 class and I think finished 2nd in the 13.5 class. He didn't have the complete car at the time and since we have tested with the complete car, we've learned a few minor things that have been changed to further improve the car before release. There will be a foam tire kit and a rubber tire kit. The rubber tire kit will be for both carpet and asphalt.