An illustrated study of Charles Mochet’s experiments with lightweight human-powered transport. The book follows the development of the Vélocar and related Mochet machines, placing them in the context of interwar engineering, wartime France, and the later fascination with compact, efficient mobility. It examines how simple materials and practical construction were used to create vehicles that challenged conventional bicycle design, including recumbent and enclosed forms that influenced the history of cycling. With attention to technical detail and historical context, the work presents Mochet’s creations as both machines and cultural artifacts, showing how modest mechanical choices could reshape ideas of speed, comfort, and economy on the road.