25 noviembre 2014
Each year, the more than 2 million tractor-trailer trucks that cruise America’s highways consume about 36 billion gallons of diesel fuel, representing more than 10 percent of the nation’s entire petroleum use. That fuel consumption could be reduced by billions of gallons a year through the use of drag-reducing devices on trucks, according to new studies.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Agjqz6ctl-g/141125074648.htm
