Oh, and a bit more from an article in the News-Palladium for March of 1974:
"In order to accommodate the various attachments, the cockpit of Clark's power module prototype rotates 180 degrees, permitting it to be used as a push or pull vehicle. Constructed as a single axle power module, it uses hydraulically operated auxiliary wheels to operate independently when not attached to the grader or scraper module. ' Designed to be quickly assembled, the grader and scraper modules are structurally married or detached from the power module by four bolts."
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Michael B.
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