A pair of enterprising thieves took a car wash to the cleaners: They used a powerful shop vacuum to suck quarters out of a coin-operated machine, police said Wednesday. The duo drew the suspicion of a passing police officer and failed to make a clean getaway. “They had a good plan. They were enterprising. If they were successful they could have returned night after night,” said Sgt. Gary Young in the Salt Lake City suburb of Cottonwood Heights. “More often thieves just use a crowbar. They get an A for effort but an F for execution.”