Cummins and Peterbilt Motors Company have released test results showing their demonstration SuperTruck (pictured) with a higher-efficiency engine and an aerodynamic tractor-trailer achieved a 54 percent increase in fuel economy, averaging about 10 mpg under real-world driving conditions. The companies say standard long-haul trucks typically achieve between 5.5 and 6.5 mpg. They say the SuperTruck […]
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