In a scenario where Britain rage-quits (read: sues for a mostly white peace) after a disaster at Dunkirk and Barbarossa, without the "distraction" of fighting Britain, succeeds in forcing the USSR east of the Urals, what would the economy of a Nazi Germany which won the war look like? How "efficient" would said economy be? How much would such an economy depend on slave labor of "undesirables"? Would the Nazi vision of autarky be ever achieved or not?