This carwash was kind of funny. The work was supposed to be by hand. The wash was done with long poles manipulated by hands, but, the rest of the magic liquids were applied by machines. I did get to see one worker use a sledgehammer, though. Evidently, the chain mechanism that moves the vehicles down the line came off it's sprocket. They had to shut the whole line down for about 10 minutes while the workers took turns trying to pound the stuff back together. I'm guessing it's a fairly regular occurrence since they had a sledgehammer handy.