Getting To 55 MPGThe Obama administration and major car manufacturers recently announced a new initiative to double Corporate Average Fuel Economy to 55 mpg by 2025. Reaching that goal will take not only feats of engineering but also changing how Americans think about cars.
Professor Anna Stefanopoulou (left) examines a V8 internal combustion engine with students Jacob Larimore and Xinfan Lin at the University of Michigan's Automotive Research Center. The researchers model engine performance to improve efficiency.
Courtesy Automotive Research Center
Attendees at the Los Angeles Auto Show look at the BMW i8 plug-in hybrid concept car. Toyota's Prius is the best-selling hybrid on the market, but almost every carmaker has some form of hybrid technology.
Jae C. Hong/AP
A Nissan Leaf charges at a station in Portland, Ore., that can recharge an electric car in 30 minutes. Electric cars could be an integral part of meeting 55-mpg fuel standards by 2025, but many consumers are put off by the vehicles' higher price and what some call "range anxiety."