At Maple Grove in PA in 2008 they had a race one sunday a month called "Street Battles" for cars only, .500 pro tree heads up 1/2 second brackets. No delay boxes and no throttle stops.You race every one in your bracket,then the bracket winners race each other on a handicapped .500 pro tree. Me and some of my friends ran a few races, and they were a blast. The car counts were not that great, and the purse was not great either. But because there were less cars, you could make more time runs. The first race they had I made 3 time runs, my friend made 5, and I had 4 elimination runs.