During World War II, militaries experimented with extreme solutions to move troops faster after landing behind enemy lines. One of the most unusual was the Welbike, a compact folding motorcycle designed to be dropped from aircraft alongside paratroopers. The bike fit inside a standard airborne container and could be unfolded and started in seconds after landing. It sacrificed comfort and power for speed and simplicity, giving soldiers immediate mobility on the ground and showing how wartime engi