Flexfuel vehicles or flexible-fuel vehicles (FFVs) are automobiles that run on more than one type of fuel, usually gasoline blended with either ethanol (E85 in the U.S.) or methanol (M85). They allow fuels such as ethanol, methanol, and gasoline, or their mixtures, to be used interchangeably or in any combination and are more energy efficient with less greenhouse emissions than conventional...
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