Good points Smokin. IIRC, one big problem, besides the bad guys in the Gulf War, was that the tanks drove distances on the hot paved roads and tracks they were not designed for, causing them to be replaced much more often.
I get it. At what point does a vehicle versus a solid object, stop the momentum of that vehicle. Since they could actually get stuck inside one another, a force field of some type acts on the vehicle, to prevent this. Which brings up another point, why is a hedge row a solid object?
In any case, I would guess that for the argument of immersion one found many more tracked tanks, than they did flipped ones. Jeeps and half-tracks maybe were more vulnerable to being "high centered" and rolled.
I don't know if anyone noticed that in the original post, I made no reference to any trees. So, by all means avoid trees. Also Oz, that used to help, but I think I have my gears / accelerator / breaks keyed now instead of associated with the up and down motion of the joystick.