The calculations shown below will give you an idea of how much money it costs to drive alone to work. Using your round trip commute distance, you can determine your operating costs.  Depending on the number of people in a carpool, the cost will be significantly reduced.  Not only will you save money on gas, you will put fewer miles on your car, limit wear and tear and possibly receive a break on your insurance costs.

Number of miles you drive round-trip to work:
Cost per gallon of gasoline $
How many miles per gallon does your automobile average?
Daily parking cost $
Type of vehicle	Small Sedan Medium Sedan Large Sedan SUV Mini-van
Daily Cost $
Monthly Cost $
Yearly Cost $

Source: AAA 2008 Edition "Your Driving Costs"