This is an interesting new development in which a man has built a bicycle almost entirely of recycled cardboard.
It looks somewhat ridiculous and it apparently rides slightly stiffer than a steel bicycle, but it’s made of recycled cardboard. “The bicycles are not only very cheap to make, they are very light and do not need to be adjusted or repaired, the solid tyres that are made of reconstituted rubber from old car tyres will never get a puncture, Elmish said. “These bikes need no maintenance and no adjustment, a car timing belt is used instead of a chain, and the tyres do not need inflating and can last for 10 years,” he said.”
The inventor believes that cardboard will replace metals as construction materials. He “predicted that in the future, cardboard might even be used in cars and even aircraft.” “We are just at the beginning and from here my vision is to see cardboard replacing metals … and countries that right now don’t have the money, will be able to benefit from so many uses for this material,” he said.
Here’s a video of the inventor: