Patton wanted to invade the Russia.
It might have worked during the window of Russia invading Manchuria. That was mayne the most powerful army ever assembled. They were in Asia however and couldn’t have made it back in time.
Patton may have made it work.
Not possible.
Throughout WWII any ground invasion could travel about 700 road miles from their supply depot before running out of fuel. This would have gotten the third army to about the Vistula River (Warsaw, Poland). The army would then be effectively stalled until a new depot was established and filled near the front line, expect the enemy to interfere with the process of building up the new depot.
While I believe it equally applied to the Soviet troops, the general opinion of most of the US and British troops could be summed up as "War is over, we won, now when do I go home?"
I doubt it, by that time the Soviet Armies were much more battle hardened that the Allied Armies and had fought in conditions that defied anything ever seen. The Soviets would have beaten us and would have totally committed themselves . You need to read more of what the eastern war as and how it was fought.