Photos: These bikes hum and fold

Cycling doesn't have to mean exposing yourself to the elements, or even having to do all the pedaling yourself. Visitors to the 2005 edition of the Japan International Cycle Show could ponder the wind- and rain-free dimensions of the 800,000 yen ($7,000) AWTT electric-power-assisted tricycle from Japanese cycle venture Shirouma Science.

Photo by Yoshikazu Tsuno/AFP/Getty Images