Devised as part of a nefarious scheme by Ratbat, Wash and Roll car wash franchises were sold prefabricated and set up at a number of locations -- including Witwicky Auto Repairs -- as a front for a gas-siphoning operation. The car wash's flashing lights and blaring music made it an entrancing experience for customers, drawing in huge amounts of business. But humans who drove their cars through the Wash and Roll were literally hypnotized by flashing lights of the car wash's stroboscopic opticon. The hypnotized humans were compelled to drive to a Blackrock Industries facility at night and drain their vehicle's gasoline into the Decepticons' storage tanks.