Brazil, Rio de Janeiro

A 700 mile demonstration rally has produced results showing natural gas is cheaper than alcohol and gasoline and also that it produces fewer greenhouse gas emissions. Three identical vehicles traveled 712 miles in the circuit Rio-Itatiaia-Rio-Búzios-Rio to compare the performance of the three fuels. Experts evaluating the project say that the operational costs of the natural gas vehicle were 61.05 reales ($US38.13) compared with 124.13 reales ($US77.53) for the alcohol vehicle and 130.40 reales ($ 81.44) for the gasoline vehicle. CO2 emissions were measured at 167 grams of carbon dioxide (CO2) per kilometer for natural gas while gasoline and alcohol emitted 207 and 183 grams respectively.