Approximately 3 gallons worth of this 2,790 trip came from green fuel.
Click on graphic to embiggen.
BTW, I got the idea for this in an email about the cost of the Volt. If you get this email, it will say it costs more than $18 to recharge the battery. The author got the cost of electricity WRONG by a factor of ten. Using the average cost of electricity in the U.S. for January 2012, the battery should charge for less than $2.00.
When I was creating my very simplified data set above, I bent over backwards to favor the Volt, allowing the tax refund off the purchase price for which not everyone is eligible, ignoring that the Volt only seats 4 where the Focus seats 5, not counting the cost of parking yourself somewhere during seven ten-hour battery charging sessions, the difficulty of finding a place to plug the car in and/or fees such a site would charge on top of the cost of the electricity, or the cost of just ignoring the battery and driving cross-country with a gas tank that is 25% smaller than the Focus tank is.
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