RELATIONSHIP BETWEEN FUEL ECONOMY AND CO2 EMISSIONS
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FIGURE 14.35b The fuel economy of motor vehicles is clearly related to their emissions of CO2. If achieved, the fuel efficiency targets set by the U.S. National Highway Transportation Safety Administration for 2025 would lower CO2 emissions by passenger cars and light trucks in the country by approximately 40%, compared with average emissions in 2012. (Data from NHTSA, http://www.nhtsa.gov/)