Well, from what I am gathering, Nascar and it's tracks loss are gains to local tracks and the surrounding businesses.

Last year some of my wife's relatives were down from N.Y. for our wedding. A couple of her uncles were diehard nascar fans so we talked alot about racing. I talked them into staying in town and going to Kokomo for the sprintweek show. After our usual tailgateing in the parking lot the racing was on and the look on their faces was priceless. They will definetely be coming back this summer to see some real racing!
I try to let nascar fans around here just how awesome the racing is at our local tracks and hopefully, if I can get them to come out once, they will be back.