Peter Forsberg spent three years building Aerium, a motorcycle that runs on a tank of compressed air worn by the rider. Much of the mechanism is visible, and it can be ridden continuously for up to five minutes. Just listen t those pistons about 16:45 into this video:
Image: YouTube / Wonder World
Original Link: https://boingboing.net/2021/01/02/aerium-the-air-powered-steampunk-motorcycle.html
