Site estimates gas costs for trips

My pal Sam loves to talk about how much money he's saved by buying a Honda Civic hybrid. So I plan to turn my boy onto Cost2Drive, a new webapp that estimates the fuel cost of any given trip. This is the way it works:

Say, you're planning a drive to P-town this weekend and you live in JP. You go to the site; enter your starting point and destination, the year of your car, along with make and model.
Cost2Drive uses your car's MPG, gleaned from the EPA. They then grab the average price of gas in your area from Oil Price Information Service, and bang it all up against and the distance, which comes via Google map technology, to "galculate" your cost.
After plugging my data into Cost2Drive I learn that getting to P-town in my 1999 Subaru Forester (stop laughing; it's a cool ride) will set me back $15.04; Sam, on the other hand, will only have to pony up $8.60.
Obviously, this calculation isn't high-level math so you could easily do it yourself. But if your car's EPA isn't tattooed to your forearm and if you aren't fully conversant in the current average price of a gallon of petrol in your hood and you want to know whether it makes the most financial sense to drive, take the train or just Fung Wah (or just be green and stay home), this app is worth a try. Besides it's fun.
Thanks to Riverwired for pointing us to this one.