A woman rides an unicycle at a park in Shanghai February 28, 2004. The unicycle was designed several years ago by Chinese inventor Li Yongli who called it "the number one vehicle in the world". REUTERS/China Photo
A woman rides an unicycle at a park in Shanghai February 28, 2004. The unicycle was designed several years ago by Chinese inventor Li Yongli who called it "the number one vehicle in the world". REUTERS/China Photo