By Doug Gray, Senior Contributing Reporter
RIO DE JANEIRO, BRAZIL - Pedaling into its 25th edition, Rio’s annual "Um Dia Sem Carro" (One Car-Free Day) is the biggest cycling event of its kind in Latin America. Part of a global initiative to encourage drivers to leave their vehicles at home for 24 hours, organizers hope that this Sunday, September 22nd, will see tens of thousands of cyclists come together in Flamengo Park.
The huge rise in popularity of cycling during the last five years in Brazil has witnessed something of a two-wheel revolution on the roads, with campaign . . .