What self-propelled vehicle did Leonardo da Vinci sketch around 1478–1480, centuries before automobiles?
Answer
Self-propelled cart
Leonardo da Vinci sketched a self-propelled cart around 1478–1480, centuries before automobiles.
The cart was designed with two large wheels and a mechanism of coiled springs hidden inside the body. As the springs unwound, they could turn the wheels through gears and drive the vehicle forward. Steering was controlled by a programmable system using blocks or pins, allowing the cart to follow a predetermined route rather than respond to a driver.
Leonardo may have intended the device for theatrical performances or court celebrations. It could move without a person visibly pushing it, making it an early example of a mechanical automaton on wheels.
The cart was not an automobile in the modern sense: it carried no engine, fuel system, or practical road transport equipment. A full-scale reconstruction demonstrated that the mechanism could work, although surviving evidence leaves some details of the original design open to interpretation.