I think I found the forerunner of the 1980's Big Wheel. Only this one was armed...
"Big-Wheel" Battlewagon Design
German commercial firm of the Bremen Hansa-Lloyd Works created the Treffas-Wagen in 1917, which had huge wheels, heavy guns, weighed 18 tons, and needed a crew of four to operate.
Treffas-Wagen
This unique monstrosity was not developed any further, to be replaced by the A7V.