there is a rural town not to far from where I live that is home to a dirt oval dedicated to lawnmower racing, pretty cool stuff, sounds like a pack of harley's with all the degoverned briggs & stratton twins. saw the best mullets ever at those races.
I've seen that before on Speed before they went all Nascar back when they used to show all different kinds of racing...I've also seen them running a roadrace style configuration and a figure 8 configuration....them boys are serious about their mowers too!