Try this
http://www.fuelcostcalculator.com/
Will give you a great idea of how much it will cost you to drive wherever your going. If you know your mpg for your vehicle if your vehicle isnt listed, just type it in and hit calculate.
My truck cost me $425 one way from philadelphia p.a to keywest florida. This turned out to be pretty accurate as I made this drive a couple months ago. The vehicle I'm thinking about trading in for would only cost me $88.68 for the same trip. 2007 honda civic hybrid, 48mpg
