The Federal Trade Commission (FTC) issued a revised rule on April 23, 2013, for the labeling of alternative fuels and the vehicles that use them. 78 Fed. Reg. 23,832 (4/23/13). The original alternative fuel labeling rule was issued in 1995 under the Energy Policy Act of 1992 and required labeling of vehicles that run on ethanol, ethanol-gasoline mixtures, natural gas, liquefied petroleum gas, electricity, and other alternative fuels. The new rule—effective May 31, 2013— adopts separate U.S. Environmental Protection Agency labeling requirements for alternative fuel vehicles and fuels, effectively harmonizing the two separate labeling requirements.