Within 10 years , there will only be 4-6 truly global  car companies in the world and I am sure one of them will be  German - based  that incorporates brands in the current  VW,Porsche,BMW and MBZ portfolios.

 

I see major consolidation leading to 1-2 large  Chinese-based players, one Japanese, one South Korean , one US  ( Ford )  and the above German.  What's left and useful from GM will be swallowed by one of these . Maybe  another " euro " firm with remnants of FIAT/Opel/Renault/Peugeot/Chrysler, with the smaller Asian/South Asian players brought in  here and there mainly  for their factories close to the huge China market.

The  electric car companies forming now are all start ups that in their business plans hope to  be bought by these firms for engineering patents .