An industrial design student in the U.K. has built a cheap, ecological transport – a cardboard bike. He designed the bike after learning that a bicycle is stolen every 71 seconds, so he decided to make a bike inexpensive enough that it wouldn’t matter if it got stolen. The prototype is made almost entirely from recyclable and recycled materials, using interchangeable mechanical parts. It costs about $30 to make. The body of the bike is environmentally-friendly and biodegradable industrial cardboard used in constructing particle boarding. Problems? Only if it rains!