Car-choked city streets are inspiring adults to get on a bicycle for local transport.  Reasons range from ecology to economy in getting around.

Korea-based auto part maker Mando is unleashing the next step up in cycling, a chainless electric bike called Footloose.

Sleek minimalist, Apple-evocative design, with technology combined, the Mando is a clear moving target for a mobile, Starbuck-struck generation of twenty-somethings.

Mando has been showcasing the bike this year, and its bike is due to hit the marketplace in Europe next year. The company has combined a throttle drive with pedal-assisted technology.

This is a chainless bike that trend-watchers are calling the "i-Phone of cycling."