You can reach 18 mph by barely pedaling.
When you pedal it, the Bangkok Air-Purifier Bike supposedly removes nasty stuff from the atmosphere.
This prototype "green" e-cycle can creep forward on the power of the sun alone, no battery required.
The Germans have dragged the velocipede into the modern age of plastics, and it actually looks quite rideable.
Hot-air balloons! Squishy, non-circular wheels! A competition to rethink bicycling in Singapore is producing some strange results.
It's a bike that's built for people who hate bikes, basically.
I don't care what you purists think, these e-bikes are a godsend to hilly cities everywhere.
Gabriel Wartofsky thinks his folding electric bike can be the final cog in a multi-modal transportation network.