Semi-trucks can make for a good starting point for a motorhome. Big rigs are supposed to carry heavy loads ... up for the job of hauling people instead of cargo. The 1988 Peterbilt 379 RV ...

Cummins and Peterbilt have created a new ... For comparison's sake, most modern trucks manage between 5.5 and 6.5 mpg. For most long-haul truck drivers, an increase in fuel economy of 54 percent ...