Rocky Top Diesel Shootout Drag Race & Truck Show The two-day event will feature the fastest diesel powered vehicles racing for over 30K in cash and prizes!  A huge truck show, and massive vendor row. The diesel drag race happens at Crossville Dragway features teams competing in  Pro-Street, Pro-Mod, Pro-Dragster, E.T. , 7.70, 6.70, and 5.90 index classes.