Car Wash (1976)

One day, a close-knit group of car-wash employees have all manner of strange visitors coming onto their forecourt, including Richard Pryor as a preaching "wonder-man" who is loved by most but loathed by one, and a man who's mistaken for a drunk, but the bottle he clutches is actually his urine sample as he is off to the hospital. Meanwhile, T.C.'s love life improves, and the songs keep coming.