Burning gasoline in 200 million motor vehicles is the single largest source of ambient air pollution in the United States. At the same time, motor vehicles consume over half of the petroleum used in...

Burning gasoline in 200 million motor vehicles is the single largest source of ambient air pollution in the United States. At the same time, motor vehicles consume over half of the petroleum used in the United States. This high consumption is a national security issue. (a) Does this knowledge increase the likelihood you might think carefully about fuel economy when you buy a motor vehicle, or affect how you drive and maintain it? Explain. (b) If knowledge alone is not enough, what could change your behavior? (c) Under what circumstances do you walk, take public transportation, or bike? (d) What would cause you to use these options more often?