Frankfurt Auto Show

Germany Frankfurt Auto Show The front of an Opel Monza concept car is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show A Volkswagen XL1 is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The Renault "Initiale Paris" concept car is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The new Nissan X-Trail is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The Lexus LF-NX is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The new Smart four joy concept car is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The new Volvo Coupe concept car is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The Peugeot Onyx concept car is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show A Jaguar Tyre is pictured during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show A woman sits in a car made of glass on display at the TRW booth, a worldwide leader in car protections systems ,during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show An employee cleans the dust off a Citroen engine during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show An visitor looks at a Citroen engine during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show Renault Clio cars are on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The Renault Twizy powered by 220V is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show A Renault Twizy Sport F1 is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The Opel Monza concept car is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The Lexus LF-NX concept car is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The front of an Opel Monza concept car is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show A range of Mercedes cars is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show A range of Mercedes cars is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The Dacia Duster is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The Dacia Logan MCV is presented during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show A range of Mercedes cars are presented during the 65th Frankfurt Auto Show in Frankfurt, Germany, Thursday, Sept. 12, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Angela Merkel, Rupert Stadler German Chancellor Angela Merkel, second right, and CEO of Audi Rupert Stadler, right, stand next to an Audi A 3 e-tron during the 65th Frankfurt Auto Show in Frankfurt, Germany, Thursday, Sept. 12, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show A man cleans a Ferrari 458 Speciale during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept.22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The new Jean Bugatti is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept.22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The Lamborghini Squadra Corse is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept.22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show The Rolls Royce Phantom Celestial is on display during the second press day of the 65th Frankfurt Auto Show in Frankfurt, Germany, Wednesday, Sept. 11, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept.22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show The Smart "fourjoy" concept car is presented during the Mercedes-Benz/ Smart Media Night the 65th Frankfurt Auto Show in Frankfurt, Germany, Monday, Sept. 9, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Michael Probst)

AP Photo/Michael Probst

Germany Frankfurt Auto Show Porsche AG CEO Matthias Mueller presents the new Porsche 918 Spyder during a preview by the Volkswagen Group prior to the 65th Frankfurt Auto Show in Frankfurt, Germany, Monday, Sept. 9, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein

Germany Frankfurt Auto Show Wolfgang Schreiber, CEO of Bentley Motors, presents the new Bentley GT V8S during a preview by the Volkswagen Group prior to the 65th Frankfurt Auto Show in Frankfurt, Germany, Monday, Sept. 9, 2013. More than 1,000 exhibitors will show their products to the public from Sept. 12 through Sept. 22, 2013. (AP Photo/Frank Augstein)

AP Photo/Frank Augstein