"The bicycle is a curious vehicle. Its passenger is its engine." ~John Howard
Not only are they the most ecologically friendly mode of easy, quick transport. They are also used in a variety of sports and said better for working out and losing weight than long-distance running or jogging due to a low impact circular motion. Used as both a work tool and a recreational tool, their uses and purpose know no bounds.
The picture above was taken at a Critical Mass event. Crtitcal Mass is a movement which holds monthly bicycle rides all over the world in order to celebrate cycling and to assert cyclists' right to the road.
Below you will find a list of websites specialising in bicycles of various types, from fixed-gear to chopper to traditional to BMX, as well as to bicycle communities and online stores.
Below you will find links to wikipedia pages with more information about bicycles. This is an ordered list just to show I know the difference.