Made out of wood pulp. Even so, the 20-pound bike will, according to a story by Fast Company [1], support riders weighing up to nearly 500 pounds. It will also be waterproof and fireproof.

If that's true, I think there might be punch of other use cases for the material.

[1] http://www.fastcodesign.com/1670753/this-9-cardboard-bike-ca...