Your list of German achievements is not really that impressive in the scope of history. Lets break it down:
The first car. I think a frenchman was actually the first, but the real innovation was Henry Ford's mass production assembly line, not the automobile itself.
Calculus. Leibniz and Newton are not co-inventors - not really anyway. Basically they both built on work done by others including al-Haythem and other decidedly non-German mathematicians. The difference is that Newton did something truly amazing (and innovative) with it.
Quantum physics. As you say 'developed part of the foundation.' Quantum theory developed gradually, with contributions of a lot of people from a lot of places. It was not like Einstein's theory of relativity, which was a real breakthrough (although it too relied on the field equations of Maxwell (an Englishman) and other past theories. Einstein was from Austria by the way.
So all your examples are sort of 'me too' or 'i helped out' innovations. You would be better off to look at the French (Curie, Pasteur, or even Descartes). Or the English (Darwin, Newton). Or the Italians (Galileo, Marconi, etc.). And I am just picking a few of the bigs from Europe (since I am not readily familiar with the history of science outside the western world - my bad).
And lets not forget the Americans. There is no ethnic identity associated with being American, but one could argue that is their strength - the mixing together of scientists who hail from all parts of the world with different cultural backgrounds and ways of thinking about life the universe and everything.
So to bring it down to your level, what have the Germans really innovated, uniquely and on their own? How to start (and loose) two world wars? How to best gas Jewish people?
But seriously, the Germans have made great contributions to science and technology. That can not be ignored. But not more than many other nations. They are about par for the course.