We all use bicycles as a tool for recreation.  But every once in a while we need to be reminded of the that the bicycle is the transportation vehicle for every man as it requires no fuel except what we put in our mouths.  In some nations, access to a bicycle (even those things they sell at Wal-Mart) can be a life changing experience facilitates economic mobility for those who can afford them.  Check out this article at http://cnn.com about Pedals For Progress.