观看免费视频 Fuel-Efficient SuperTruck B-Roll
动画说明：
This free, downloadable B-roll footage from the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) is for use by news media and education organizations. This high-resolution video features clips of fuel-efficient SuperTrucks at Cummins, Inc., in Columbus, Indiana, including shots of a SuperTruck in motion and parked, under the hood, the aerodynamic features, engine and fuel efficiency testing at Cummins, Inc., and a waste heat recovery heat exchanger on a SuperTruck.