Amazing machine by Leonardo Da Vinci with a little problem. It wouldn't work.. Or? Check video!
In 1486, Leonardo Da Vinci drew a number of sketches of supersized version of the crossbow weapon, commonly known as a “ballistaâ€.
In 1915, Russian military engineer Nikolay Lebedenko came up with the idea of ​​creating a machine with large wheels to ensure travel over enemy trenches.