The Obama administration will delay the release of standards that would double the fuel economy of cars and light trucks from the original September 30 deadline to mid-November. President Obama announced the new Corporate Average Fuel Economy standards in July; they would set a fleetwide target of 54.5 miles per gallon by model year 2025. The Environmental Protection Agency and the Department of Transportation’s National Highway Traffic Safety Administration were scheduled to formalize the CAFE rules last Friday to coordinate with California rules, but federal officials will require the additional month and a half to finalize the joint rule.