German carmaker Adam Opel presents the full electric vehicle 'Opel RAK e' concept car at the International...
German carmaker Adam Opel presents the full electric vehicle 'Opel RAK e' concept car at the International Motor Show (IAA) in Frankfurt, September 13, 2011. The world's biggest auto show runs until September 25. REUTERS/Kai Pfaffenbach (GERMANY - Tags: TRANSPORT BUSINESS)