Leave it to a bunch of guys to come up with a new way to use a motorcycle.
A group of men in China recorded how to wash and dry hair with a motorcycle. One guy operated the bike, with its tire in a shallow pool of water, while another guy lies on his stomach on a wooden pallet. When the wheel spins, the man's hair gets wet. That was when a third man applied shampoo.
The used the bike exhaust to dry the hair.