[Joey]

My brother's scout troop had a pinewood derby thing a week ago, their strip had a relatively simple scoring system. I don't know how the times were relayed (thing was read into by a laptop instantaneously), but they had a simple motion-sensor above each of the three lanes with different relay circuits, so that the first place finisher had a light above the land that came on, second places blinked, and third didn't come on at all.