Have a look at these beautiful bikes from US company called derringer. These bikes cost about 3500 pounds, but are rather environmentally friendly, because of their hybrid option...
Derringers can be human propelled, propelled via engine power, or human propelled with the assistance of engine power. While under power, the pedals can also remain stationary, allowing you to operate in the style of a traditional motorcycle.
these photos were published in theblogpaper beta no2

Published on the 18th of December 2009, around 10.000 copies have been printed and distributed throughout London







Comments
i would happily have one of them mean machines
They look fantastic... Cool way to get around in the City!