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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

In 2005, their sales increased even further, accounting for approximately 54% of all new car sales. Before the introduction of the flex-fuel car in Brazil in 2003, cars running on ethanol fuel were primarily using pure ethanol or hydrous ethanol blends. Current Legal Requirement for Use of Anhydrous Ethanol in the United States.