Sources:
*AAA, Your Driving Costs, April 2012 [http://www.colorado.aaa.com/press_release/2012/04/aaa_cost_of_owning_vehicle.html]
*APTA, Transit Savings Report, July 2012 [http://www.publictransportation.org/tools/transitsavings/Pages/default.aspx]
Figures are based on the fixed and variable costs of driving an average sedan 15,000 miles per year.
