The EPA has readied a final determination that calls for the rolling back of corporate average fuel economy (CAFE) standards, according to the Wall Street Journal . The current standards would require automakers to sell vehicles that average 54.5 miles per gallon by 2025. This move by the White House will likely be subjected to litigation. Putting regulations in place requires a lot of legwork and several years of procedure. Undoing them is not all that much easier. The CAFE standards are a fleet-wide average, which means that a company, such as Ford, can still sell vehicles that do not meet the fuel efficiency standard so long as their entire fleet averages out to that level. So, for every inefficient SUV that the company sells, it will need to also sell a lighter car, a hybrid, an EV, or simply a more efficient SUV, to raise the fleet average. […]