Script Summary: show the gas cost of trips on google maps
Version: 1.0
* when you enter start and end addresses on maps.google.com, this script retrieves the cost of gas for that area and displays the cost of the trip, one way and roundtrip.
* the default miles per gallon is 25. you can change this in the SCRIPT CONFIGURATION section
note: right now the script's a bit quirky, so you need to go to a link like http://tinyurl.com/4oqnv4 rather than go to maps.google.com and put in the addresses. this should be fixed in the future
