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Today, we take another look at ethanol for our weekly Greenlings post. You've probably noticed that many vehicles are labeled with a Flex Fuel badge from the manufacturer, indicating that the car or truck is capable of running safely on E85 – a blend of 85-percent ethanol and 15-percent gasoline.

While ethanol blended into gasoline can be a comparative good deal (or a possible scam), there's also good money to be made ignoring the biofuel altogether. At least, that's the case for two gas stations in Brevard County, Florida that proudly sell ethanol-free gasoline.

The chairman of the agriculture committee in the U.S. House of Representatives wants to mandate that the ethanol blends in gasoline be raised from the current 10 percent to 15 percent. Collin Peterson (D-MN) comes from a state that grows a lot of corn and produces a lot of ethanol. Minnesota already has more E85 stations than any other state. However, the uneven availability of E85 in other parts of the country means that retail demand for E85 has not kept up with increase in production resultin