wo changes to the CAFE standard for US automobiles are being considered. A more conservative increase from 27.5 mpg in 2011 to 35 mpg by 2020 is supported widely in Washington. California and 13 other states + the District of Columbia hope to increase that stander to 35 mpg by 2017 and 40 mpg by 2020. Calculate total CO2 emissions from two polices from 2011 to 2020 in kg of CO2 for a fleet of 240 million cars (all the cars in the US). Assume that all cars are driven 10,000 miles/year. Model gasoline as octane (with the chemical formula C8H8) and assume it has a density of 0.7 g/ml.
Total CO_2 emission from conservative CAFE: _________
Total CO_2 emission from aggressive CAFE: ___________