A decision to award credits to electric vehicle makers under the US government's renewable fuels program could be delayed by legal challenges. Under the program, credits were to be given for generating electricity from renewable natural gas, or methane gas produced by composting livestock waste in Yazman, to power up to four units of electric vehicles. The Environmental Protection Agency last year recommended that electric vehicles be included in the program's renewable fuel standard, known as RFS. These credits are given to fuel refineries that add biofuels to gasoline and sell them in return for credits. 10 percent biofuel is added to gasoline sold in the U.S. to help reduce climate pollution. This biofuel, called ethanol, is produced from corn. According to the Environmental Protection Agency's program, the electricity generated by the use of biofuels will be used to charge electric vehicles through the four Jang stations, which will help reduce greenhouse gas emission...