I agree in principle, but wouldn't it be cheating to steal a tank?  Lead your squad to the tank, incapacitate the crew (but let them live), and drive away their vehicle, which is also their weapon, and you could one-shot the whole thing.

Then again, given the low probability of completing such a maneuver in real life without getting blown up or run over by the *other* tanks on the field, maybe they should let them have it.