While the outlook for biofuel in the U.S. seems promising, the reality is "rather grim," according to The Economist. To dramatically increase the use of biofuel for transportation, the country is pushing for a huge expansion of the production of advanced biofuel, principally cellulosic ethanol. But that effort is running into technical and economic obstacles. "The [Environmental Protection Agency] has been forced to slash its 2010 mandate for the most widely touted of the non-corn biofuels, cellulosic ethanol, from 100 million gallons to just 6.5 million, less than a thousandth of the 11 billion gallons produced from corn in 2009," The Economist notes.
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