Six wheels on each side divided into groups of three with a strong angling at the front and back respectively. Probably the most obvious thing about Ridlon’s design is the suspension. He submitted a quad-track tank with a crewless turret propelled by a hybrid-drive system based on the M60. One such tank, perhaps the most outlandish of the top four finishers, came from the fertile mind of Everett Philip Ridlon of Hibbing, Minnesota. Nonetheless, the competition formed part of one means by which the US Army could assess new and novel ideas for the potential next generation of tanks. Of the designs submitted, some were clearly better thought-out and practical in terms of production, cost, and combat effectiveness than others.

During the height of the Cold War in 1962, the Armor Association of the United States Army held an open competition for the design of a new tank. A new tank would be needed to deal with this increasingly dangerous threat. The latest generation of Soviet tanks were well armed and armored, and much smaller than their American counterparts.

By 1962, the 105 mm Gun Tank M60 was still a new tank in service with the US Army but, just like any current system, was already being considered for future replacement, redevelopment, and upgrading.

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