Nearly 1 billion gallons (3.8 billion L) of diesel fuel could be saved annually if the throngs of heavy-duty trucks and trailers on U.S. highways adopted some of the aerodynamic advancements pioneered on passenger cars, a new study says. The findings come as part of a 2-year collaborative effort between the U.S. Department of Energy and four members of the Truck Manufacturers Assn. (TMA): International Truck and Engine Corp., Freightliner LLC, Mack Trucks Inc. and Volvo Trucks North ...

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