This is one of those strange designs that really makes you wonder what would happen in a torrential rainstorm since this bicycle is made mostly of cardboard. Because of this, it’s affordable and low-cost. It’s also made of renewable material, and since it doesn’t have any expensive parts, it really helps prevent theft. We’d assume that no one would be on the lookout for a bicycle made of cardboard. It’s miraculously waterproof and can sustain up to six months of use. The only thing not made of cardboard are the metal breaks and pneumatic (The Switchers).