Izhar Gafni, an Israeli inventor, was in a bike shop discussing his passion one day when the discussion turned to a man who had invented a cardboard canoe.
Gafni left the shop, but couldn't get the idea of a cardboard canoe out of his head.
"Bicycle is sort of my hobby," Gafni said in a video that's become a hit on the Internet. "It's what I do in my free time. It's in my soul."
"Suddenly, it just struck my mind," Gafni continued. "Why not make a bicycle out of cardboard?"
Gafni began a quest to fulfill that dream and spoke with three engineers, all of whom told him it would be impossible to make a working bike from cardboard.