Use of alternative fuels in the transportation sector rose 13% between 2010 and 2011 to 515.62 million gasoline-equivalent gallons, of which E85 accounted for nearly 137.17 million, second only to natural gas by volume, according to the Energy Information Administration. Because of the approaching blend wall, E10 use remained steady between 2010 and 2011, shifting the increased ethanol consumption to E85, whose use rose 52% during the same period, EIA said. More flex-fuel vehicles were available than any other alternative-fueled cars in 2011, followed by hybrid and compressed natural gas vehicles, the report showed.

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