A landing bike, the Excelsior Welbike was one of the smallest military motorcycles in World War II. The motorcycle was designed to ensure the mobility of troops in the landing zone. In a partially folded state, the Welbike was packed in a special container and attached to the aircraft. Welbike was housed in a cylindrical container with a diameter of. The rear seat was lowered and did not protrude beyond the dimensions of the frame, the control levers, together with part of the front fork, were folded along the frame, on top of the engine. After removing the motorcycle from the container, it took no more than 15 seconds to bring it to a ready state and start it. https://www.artstation.com/astrovskiy