Da Vinci’s Self-Propelled Cart on a Highway

A fully functional self-propelled cart, built according to Leonardo da Vinci’s blueprints, traveling down a modern highway. The wooden frame and exposed gear mechanisms operate flawlessly, powered by an intricate system of springs and weights. A driver wearing a vintage leather cap and goggles steers the cart, while modern vehicles pass by, their drivers staring in amazement. The background features road signs, bridges, and a bustling city skyline, contrasting old-world engineering with contemporary transportation.