The Caterpillar D7 series medium bulldozer began service with the U.S. military during World War II. With upgrades and changes, it has been a workhorse for the U.S. Military for over fifty years, fulfilling its primary earth moving role as well as a host of other roles discovered for it, for example mine clearing with a special flail adapter kit. As is so often the case, the idea for this project is based upon a photograph showing a D7 Dozer in action during World War II clearing the wreckage of a Panzer IV from the roadway.
The Armored Car stemmed from a 1914 report that Belgian soldiers were using an armor-plated Minerva sedan car to raid the German Army. Inspired by this knowledge, Rolls-Royce quickly armored an assortment of Rolls-Royce Silver Ghosts donated by private citizens. The cars were shielded with 3/8” thick armor plate, fitted with dual rear axles and two machine guns, with 3,000 rounds of ammunition. They carried a crew of three and despite their crudeness (and four ton weight), could reliably maintain 60 mph on dirt roads, thanks to the seven-liter, six-cylinder engine.