The average tractor-trailer travels less than 7 miles on a gallon of diesel, making it one of the least-efficient vehicles on the road. Spurred by pollution regulations and sluggish demand, truck makers are trying to change that.
WSJ.com: US Business, Wall Street Journal: Business
Thu, 09/21/2017 - 7:17am
The average tractor-trailer travels less than 7 miles on a gallon of diesel, making it one of the least-efficient vehicles on the road. Spurred by pollution regulations and sluggish demand, truck makers are trying to change that.