Planning a summer road trip? Costtodrive.com calculates the cost of gasoline in seconds.
What's hot: Punch in your starting point and destination, add the year, make and model of the car you're driving, then click the little red gas pump and find out how much it will cost you to get there. Travelers will appreciate the side-by-side information from Kayak that tells you how much it would cost to fly instead. Need directions? It has a Google map of your route, plus a link to directions from Mapquest, Yahoo and Google maps.
What's not: The one thing we'd like to see is an international version for travelers who rent cars abroad.

















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