World’s Fastest Hot Tub Is Real, In a Cadillac and Kind of CreepyWorld’s Fastest Hot Tub Is Real, In a Cadillac and Kind of CreepyHot tub, meet hot rod. These two enterprising fellows have turned a 1969 Cadillac DeVille into a mobile hot tub. In the process, they're renamed the vehicle the Carpool DeVille.Drew WeisholtzDrew Weisholtz