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Miles Per Dollar Calculator 0.2.1-signed
Calculate estimated price for gas for distance in miles selected on page. MPG and gas price are set in the add-on Preferences.
About this Add-on
You can get MPG at http://www.fueleconomy.gov/feg/findacar.htm
and your local gas prices here: http://gasbuddy.com/
DISCLAIMER: this is just an estimate price! YMMV!!!
No special intelligence for extracting gas prices or estimating MPG but still useful!