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INGOLSTADT, GERMANY - DECEMBER 07: An electric car charges at a charging station at a rest area along the A9 highway on December 7, 2017 near Ingolstadt, Germany. Germany is expanding its network of electric car charging stations in an effort to promote the growth of electric car usage. (Photo by Sean Gallup/Getty Images)

INGOLSTADT, GERMANY - DECEMBER 07:  An electric car charges at a charging station at a rest area along the A9 highway on December 7, 2017 near Ingolstadt, Germany. Germany is expanding its network of electric car charging stations in an effort to promote the growth of electric car usage.  (Photo by Sean Gallup/Getty Images)