Classic cars and motorcycles are displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

A Delage D6 competition 1947 is displayed on February 5, 2014 at the Grand Palais in Paris on the eve of an auction of luxury vintage cars. (Photo by Francois Guillot/AFP Photo)

Classic cars and motorcycles are displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

A 2013 Harley Davidson Dyna Super Glide motorcycle, which had been gifted to Pope Francis by the brand as Harley Davidson celebrated its 110th anniversary, is displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

Classic cars and motorcycles are displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

Classic cars and motorcycles are displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

A 2013 Harley Davidson Dyna Super Glide motorcycle, which had been gifted to Pope Francis by the brand as Harley Davidson celebrated its 110th anniversary, is displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

Classic cars and motorcycles are displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

Classic cars and motorcycles are displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

A 2013 Harley Davidson Dyna Super Glide motorcycle, which had been gifted to Pope Francis by the brand as Harley Davidson celebrated its 110th anniversary, is displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

A Hispano-Suiza 15/20 HP omnibus is displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

A 1954 Mercedes-Benz 300 S Cabriolet A is displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

Classic motorcycles are displayed during a press preview before a mass auction of vintage vehicles organised by Bonhams auction house as part of “Retromobile Week” at the Grand Palais in Paris, France, 05 February 2014. (Photo by Ian Langsdon/EPA)

Vintage and classic cars are displayed by Bonhams auction house, during an exhibition, at the Grand Palais in Paris, Wednesday, February 5, 2014. (Photo by Thibault Camus/AP Photo)

A prototype Porsche 962 C is displayed on February 5, 2014 at the Grand Palais in Paris on the eve of an auction of luxury vintage cars. vintage motor cars, collection motorbikes will be auctionned by British auction house Bonhams on February 6. (Photo by Francois Guillot/AFP Photo)

Vintage and classic cars are displayed by Bonhams auction house, during an exhibition, at the Grand Palais in Paris, Wednesday, February 5, 2014. (Photo by Thibault Camus/AP Photo)

A pair of 1959 Ford Galaxy cars are displayed ahead of Bonham's sale of vintage and classic cars, at the Grand Palais in Paris, Wednesday, February 5, 2014. The Grand Palais is staging an exhibition of vintage cars, to be followed by a sale of historic cars by Bonhams auction house on Thursday. (Photo by Thibault Camus/AP Photo)

Visitors walk past vintage and classic cars displayed by Bonhams auction house, during an exhibition, at the Grand Palais in Paris, Wednesday, February 5, 2014. (Photo by Thibault Camus/AP Photo)

A Delage D6 3 litres competition (1947) is displayed ahead of Bonhams' Les Grandes Marques du Monde vintage and classic cars sale at the Grand Palais in Paris, February 5, 2014. (Photo by Benoit Tessier/Reuters)

A Mercedes 300 SL is displayed on February 5, 2014 at the Grand Palais in Paris on the eve of an auction of luxury vintage cars. (Photo by Francois Guillot/AFP Photo)

A motorcycle Majestic 350 CC 1931 is displayed on February 5, 2014 at the Grand Palais in Paris on the eve of an auction of luxury vintage cars. (Photo by Francois Guillot/AFP Photo)