Virtually every driver in the country could be pumping gasoline containing corn-produced ethanol by 2012 under a plan approved June 5 by the United States Senate, according to an Associated Press report. The proposal, incorporated into a broader energy bill, would dramatically change how refiners blend gasoline and how they meet federal clean air requirements. It would require a doubling of ethanol use, to at least 5 billion gallons a year, in what would be a boon to corn farmers, according to AP. The ethanol additive is made mainly in the Midwest from corn, although it can come from other grains and biomass. Under the new mandate, it would have to be used by refiners in every state except Alaska and Hawaii, AP said.