If you’ve been meaning to get out on a bike, but haven’t been willing or able to come up with the initial purchase price, a British design student may have just boxed up a solution to your problem with the unlikeliest of materials: cardboard.

The bicycle’s green credentials are already outstanding, being the most efficient form of transportation yet created, and having a number of more-or-less planet-friendly permutations. But this cardboard bike, made from tough, water-resistant Hexacomb should bring the price point of a new ride down into anyone’s budget.

Whether the bike actually brings any increased sustainability to the table is questionable, though. It won’t last long, especially under heavy riders, and so will need to be recycled frequently. That takes energy, possibly more than is needed to create a durable steel frame that lasts decades.  Plus, even if a steel frame fails, its useful life may not be over.