At least, you can see, that they are working on it. For example mercedes/daimler is working on energy storage near Dresden [1] for homes [2]. Mercedes is pushing this fab with €500mil [3]. Furthermore, there is another fab right next to it, which startet a few years earlier [4].

As for the bankruptcy speculation: they are too big to fail - whatever the consequences might be for the german taxpayer.

[1] http://www.accumotive.de/de/home-englisch.html [2] https://www.mercedes-benz.com/en/mercedes-benz-energy/ [3] http://www.heise.de/newsticker/meldung/Elektromobilitaet-Dai... (german) [4] https://www.li-tec.de/en