the roll racing all started with the honda boys and turbo imports, they wouldnt go from a dig for fear of breaking axles or just not hooking up. So the local muscle cars stepped up to their own game of roll racing and i think it just stuck because it was easier to go cruising, line up, slow down, run and keep cruising rather than stopping and stirring up alot of attention
i like digs because of the driver ability involved, a car with less HP thats hooked up still has a chance at winning