From Renewable Fuels Association: "Unprecedented U.S. ethanol exports continue to be driven by the fact that corn ethanol is currently the lowest-cost motor fuel source in the world."Top destinations: Canada, Brazil, and European Union.Through July 2011, we've exported roughly 7.5% of our total ethanol output.Year-to-date DDGS exports total 4.43 million metric tons, meaning the U.S. is on pace to