Returning to the original question, you can fake it with an M2. Back in the mists of time somebody did it to a lorry. Dunno if you'll be able to fire it and be part of the tank crew, but you could probably make it look ok at any rate. The script is probably in the Ed Depot somewhere.
Oh, and there is a snowy Abrams. Comes with Kegetys Winter Nogojev I think.