Air – Facts and Figures

• The United States produces more than 5 billion tons of carbon dioxide every year — the highest of any country in the world.
  
  
• There are over 200 million passenger cars and light trucks on American roads. These vehicles drive almost 2 trillion miles every year.
  
  
• Motor vehicles account for about half of all air pollution in the United States.

The World Bank Group, 2002.
U.S. EPA, Office of Transportation and Air Quality, 2003.