This July 11, 2012, handout photo provided by the Renewable Fuels Association shows a Lawrence, Kansas, fueling station pump with various grades of fuel, including E15, which contains 5 percent more ethanol than the current 10 percent norm sold at most U.S. gas stations. E15 is sold in just 20 stations in six Midwestern states, but could spread to other regions as the Obama administration considers whether to require more ethanol in gasoline; it's cheaper and cleaner but it could damage older cars and motorcycles. The American Petroleum Institute has asked the Supreme Court to block sales of E15. The Court could decide as soon as Monday, June 24, 2013, whether to hear the ethanol case. (AP Photo/Renewable Fuels Association, Robert White)

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Boost for cars or bust? Ethanol debate heats up

• By ncs-import
• June 24, 2013