I had to use a fair amount of footand boost to keep up with a Sterling dump truck with a mercedez diesel engine and automatic from a stoplight. That's the fastest dump truck I ever encountered. If they dump the Cummins and put in a Mercedes engine, I may be the first in line to get one! Never been real big on brand loyalty anyway. iI Ford had a better engine than he Cummins, I'd be driving a Ford!