Why the focus on Porsche and VW?
Siemens
https://collections.ushmm.org/search/catalog/irn1000378
Krupp
https://collections.ushmm.org/search/catalog/irn1000125
Maybe a better question:
How do you pick up the pieces of an economy after a murderous dictatorship burned through it? I am not sure there are any right answers here.