For a century Germany's comparative advantage has been [mechanical] engineering. As a European I want (need?) Germany to succeed. Ergo: more of this, please.
Their advantage was mechanical engineering. They have historically not done well with electrical systems. So this is a change - hopefully for the better.
Electrical auxiliary stuff used to be and maybe still is a source of trouble. Power electronics should be fine, there's plenty of know-how available in the country, and with any luck, car companies won't have time to home-grow a mismanagement structure to fuck it up like they did with software.
Software and battery cells are the main challenges.