About 40 years after Autocar was established in 1897, and about 30 years after the company started building trucks in 1907, Mayer Body Corp. fitted a mammoth dump body to an equally large ca.-1937 Autocar chassis. The body builder didn’t supply any information to accompany the image of the giant dump truck, but given its large size, you can bet this monstrous rig toiled under heavy loads the length of its life.