 the use of Ethanol instead of Gasoline should be responsible for avoiding the release of around 508 million tons of CO in the period between 2008 and 2017;  the use of Biodiesel, replacing Diesel in the ten-year period, should be responsible for avoiding the release of around 62 million tons of CO  the use of biofuels, instead of fossil fuels, should be responsible for avoiding the release of 570 million tons of CO in the period between 2008 and 2017.