Random idea: The T-34 can trace its heritage back to the BT series of fast tanks. One of the intermediary steps was the A-20. This, lhad an 8×6-wheel convertible drive similar to the BT tank's 8×2, which allowed it to run on wheels without tracks.
Above: BT-2 tank rigged for road movement without tracks.
Above from left: BT-7, A-20 fast tank prototype, T-34 Model 1940, T-34 Model 1941.
eventually this feature was dropped before we got to the T-34. But what if it hadn't and thus we had T-34s also able to run on just wheels rather than tracks?