Automakers in the United States, Asia, and France have been at the forefront of plug-in electric vehicle (PEV) development since the vehicles hit the mass market reality. Tesla, Chevrolet, Nissan, Mitsubishi, Renault, and a slew of Chinese automakers have led the charge since 2008, but no German automaker had placed a PEV in a major market until March.
From: http://www.forbes.com/sites/pikeresearch/2013/04/17/german-plug-ins-arrive-finally/