The Hyundai N50 is presented during the media day at the Frankfurt Motor Show (IAA) in Frankfurt, Germany September 15, 2015. REUTERS/Kai Pfaffenbach
A Citroen Aircross concept car is pictured during the media day at the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 15, 2015. REUTERS/Kai Pfaffenbach
BMW CEO Harald Krueger collapses at a presentation during the media day at the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 15, 2015. German luxury carmaker BMW's new chief executive, Krueger, fainted on stage at the Frankfurt auto show on Tuesday, a Reuters witness reported. Krueger collapsed as he was commenting on BMW's latest models during a news conference. REUTERS/Kai Pfaffenbach
Daimler CEO Dieter Zetsche presents the Mercedes-Benz Concept IAA car during the media day at the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 15, 2015. REUTERS/Ralph Orlowski
Bentley CEO Wolfgang Duerheimer presents Bentley Bentayga during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
An employee cleans the Mercedes-Benz AMG Vision Gran Turismo car during the media day at the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Ralph Orlowski
The front of a Mercedes-Benz F 015 Luxury in Motion concept car is pictured at the booth of Mercedes-Benz during the media day at the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Ralph Orlowski
Bugatti Vision concept car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
The new Porsche 911 Carrera S (L) and concept car Mission E are presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
SEAT Leon Cross Sport is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
New Porsche 911 Carrera S car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Visitors stand around cars during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Bugatti Vision concept car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Volkswagen Tiguan R-Line car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
A visitor takes a picture of the logo on the Lamborghini Huracan LP 610-4 Spyder during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
The new electric Porsche Mission E concept car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Lamborghini Huracan LP 610-4 Spyder is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
SEAT Leon Cross Sport is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Porsche CEO Matthias Mueller leaves the new electric Porsche Mission E concept car onstage during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Visitors walk around Bentley Bentayga during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Audi CEO Rupert Stadler presents the new Audi A4 g-tron (L) and A4 ultra models during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Lamborghini CEO Stephan Winkelmann stands next to the Lamborghini Huracan LP 610-4 Spyder during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Bugatti Vision concept car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Bentley Bentayga car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Member of the Board of Management for the Volkswagen brand Heinz-Jakob Neusser presents the VW Tiguan GTE during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
The new Audi e-tron Quattro has its world premiere during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Ulrich Hackenberg, Board Member for Technical Development of Audi, gives a world premiere to the new Audi e-tron Quattro during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Volkswagen Tiguan car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
Bugatti Vision concept car is presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach
New Porsche 911 Carrera S cars are presented during the Volkswagen group night ahead of the Frankfurt Motor Show (IAA) in Frankfurt, Germany, September 14, 2015. REUTERS/Kai Pfaffenbach