Invented in 1912, the small-scale, obsessive sport of slot car racing has seen its ups and downs over the last hundred years. The hobby, in which motorized model cars speed around a slotted track, enjoyed its height of popularity after World War II, then sputtered in the '70s with the introduction of Pong and other videogames. The public arcades where hobbyists could race have largely been wiped off the map, but an estimated three million slot car enthusiasts still rev their tiny engines in…
