A key initiative in the U.S. is to improve the fuel efficiency of thecars we drive. In addition, a shift to efficient modes of transportlike rail, light rail and public transportation is important, especiallyin metropolitan areas. In the Energy [R]evolution Scenario, the carfleet still grows by 20 percent from the year 2000 to 2050, and percapita miles traveled increase as well with the growth of theeconomy. However, transport sector energy demand is reduced by40 percent. Highly efficient propulsion technology, including hybrid,plug-in hybrid and battery-electric powertrains, will bring largeefficiency gains. By 2050, 25 percent of U.S. transport energydemand will be provided by electricity.
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