AMA Pro Racing Pat Clark Motorsports: Las Vegas, Nevada Pat Clark Motorsports is pleased to announce a unique opportunity for fans to own a piece of history as the gear of AMA Pro National Guard SuperBike class racers Chris Clark and Ben Bostrom will be auctioned to benefit Rett Syndrome. The special edition leathers and bodywork with new livery will make their AMA Pro race debut at the Mazda Raceway Laguna Seca round of the series and be auctioned on eBay the following week.