“To my delight, I only discovered similar concepts based on bamboo. But when I started asking engineers about the possibility of producing a cardboard bicycle, I was sent away and told that the realization of my idea is impossible. One day I was watching a documentary about the production of the first jumbo jet — and an engineer on the team had said that when everyone tells him that what he is doing is impossible — it makes it even clearer to him that he is progressing in the right direction. That saying motivated me to experiment with different materials on cardboard, to find what produces the desired strength and durability.”