Actually NASCAR is having trouble keeping sponsors and several major ones have quit over the past few years. The other day they were worried that in a few years they may not have enough cars to fill a 43 car field and that there would most likely only be two or three Super Teams as Childress, Hendrix, Roush, and Yates may have to merge to stay in racing. And believe me this economic situation isn't helping them either. Also more and more empty seats are showing up at the races. NASCARS proposed solution, build more race tracks.
Ron
