I worked at a full service tunnel wash as a kid in late 70`s. Man, what an abusive way to get a car clean. Massive spinning plastic bristle brushes, heavy, nasty cloth curtains slapping the crap outta your car, a set of 6 in-floor rollers on each side to spin your wheels up to about 60mph while a set of metal - bristle brushes clamp down on both sides of tire while it`s spinning to clean it, using rubber mallets to pound on rocker panels to knock off snow and ice chunks, water filtered from central pit by pumping into 55 gallon drums where dirt would settle and `clean ` water pumped back into system from top. It`s amazing any car ever made it outta there *without* damage. Winter would be packed from 8am to 8pm. Big open troughs of Carbon tetrachloride you`d dip your plastic bottles in to refill for tar removal. All for $2.65 / hr.
Today`s OSHA woulda had a field day at that place. Occasionally folks would bring their Porsches, Corvettes in...what a treat for a 15 year old kid to drive one if even only for 50ft on/off the line. Yep, gears were ground on occasion.
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