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You read it right, folks. I got a Rule of Cool fever for this thread

Is it possible (both strategically and physically) to have gigantic armored grindwheels as military superweapon (singular, maybe, since it would be VERY expensive to make) or supertank?

Would it be useless against terrain of battlefields? Or it's ability to crush its way through enemy lines makes it a valuable asset?
Here's some pics to feast your eyes, and let you know what I mean:






Thanks in advance!
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