If only Hitler would have left the Soviets alone in the 40s, then we would have seen more production.
It was not planned to take so long, they started in 22. June and it was planned to concer russia before Winter.
Hitlers Opinion was we could get russia in 22 Weeks.
We didnt even had any winter equipment with us.
That was part of the Blitzkrieg Strategie to be fast.
We had a lot more Superweapons, Superweapon Concepts, and Technologie.
And where also working on the Atomic-Bomb to deliver it with a V2