According to my admittedly Looney Toons-influenced impression of how dog racing works, greyhounds chase a mechanical rabbit around a track. I don't have much more personal experience with human races than I do with dog races, but as far as I know they don't use a comparable incentive for the human racers. They should--you could get me to run a marathon if I were chasing a keg of good beer. Rahr & Sons Brewing Company has this figured out,... More >>>