street racers on circular expressways
Refers to groups of street racers who drive in loops on urban expressways, likened to a roulette wheel. Slang term used in car culture contexts.
On weekend nights, street racers appear on the Metropolitan Expressway.
Compound of ルーレット (roulette) and 族 (tribe, group), from the circular motion of roulette wheels, describing racers looping on expressways.