The average Joe doesn't even have to worry about building anything. Cowling's got all the box cars anyone could ever need and the public can use them whenever they get the inkling to go fast, well sort of fast. Weekend racers of sanctioned events get upwards of 18 mph. Do not shrug that seeming snail's pace off. Tilting at 20 looks pretty dang fast three inches off the ground, facing a hairpin right-hander.
Gravity does more than get cars around the track.
Gravity also brings families together to the box car races, where kids can compete on equal footing with their parents. And that's Cowling's ultimate goal.