More than 90% of American households own a car, so EPA’s proposal to ban the vast majority (about 70%) of new gasoline and diesel vehicles in less than 10 years is going to affect almost every one of us. It will set the terms for what cars and trucks we can even consider purchasing in the years ahead, and it will certainly affect those vehicle price tags; It will have massive repercussions across the U.S. economy and supply chains; It could upend and challenge U.S. energy security and potentially the reliability of our electricity.