Don't get personal, just think.
Doesn't that prove that moving off shore isn't necessary? They make a profit right?
But more to your point, the problem with your example is that the products produced(cars) by those German firms are consumed in the USA. If the Kruats tied to ship them back to Germany there would be riots in Berlin.
Nobody moved to China to save a company, all were making a profit. Greed is good but when combined with stupidity and zero loyalty to the USA is traitorous. Yes I said it, traitorous. History repeats itself.