Crazy russians! Although I've driven on quite a few frozen lakes in ND, there would be no way in hell I'd be on that ice after a car went through. Very creative though!
You're funny.
Is there any part of this vehicle water did not penetrate as it sat in the lake? Do we know if it leaked into the differentials? or transmission? or engine? or axles? air intake/plenum?
Wherever there is water, it will freeze and expand, and crack whatever component it has filled. Will this vehicle have any value besides scrap metal?