i think the most logical answer to that question is the fact that there really isnt any return on their investment. there is no television to get the name out there......there really isnt any fan interest other than that which already exists and face it....if some fortune 500 company sponsored a sprint car to run usac or any other non-wing series.......would you be more likely to buy that product? the reason that the woo guys get big money sponsors is because there is WAY more exposure for their product............sad but true.....