Even with a purse similar to the nationals not many of the winged guys would run it. I'm not sure how many non wing guys would run on the big half mile. It seems a lot of local teams either do not like the half miles or don't have the resources to run them. If you ran it on a short track you would probably have tons of cars but wouldn't have enough seats to make it feasible. On the safety aspect, there are many more winged races throughout the county and they run on more big race tracks. Granted safety has come a long way since Knoxville started running wings but I think you would still have major issues if non winged cars were run on big tracks more often.