What type of cart did Leonardo da Vinci sketch that could move without being pushed or pulled?
Answer
Self-propelled cart
Leonardo da Vinci sketched a self-propelled cart that could move without being pushed or pulled.
The design, usually dated to the late fifteenth century, used coiled springs to store energy. When released, the springs drove the cart’s wheels through a system of gears. A programmable steering mechanism, including shaped cams, could make the vehicle follow a predetermined route.
The cart may have been intended for theatrical performances, where a machine could enter a stage or move scenery automatically. It was not an automobile in the modern sense: it had no engine, fuel tank, brakes, or steering system controlled by a driver.
Because only drawings and reconstructions survive, the exact original performance remains uncertain. Modern models have demonstrated that the basic mechanism can work, making the sketch an important early example of a self-moving vehicle.