Without public transportation systems, the annual impact of American households would include an additional 102.2 billion vehicle miles traveled, 5.3 billion gallons of gas, and 37 million metric tons of CO2 emissions.
Center for Sustainable Systems School of Natural Resources and Environment University of Michigan 3012 Dana Building 440 Church Street Ann Arbor, MI 48109-1041 Phone: (734) 764-1412 css.info@umich.edu