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Vintage cars and motorbikes are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914057 )

A 1929 Bugatti Type 35B Grand Prix is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914063 )

A 1959 Cadillac Series 62 is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914087 )

A reporter films the 2013 Harley Davidson 1 585 cm3 Dyna Super Glide Custom, donated to Pope Francis last year and signed by him on its tank, ahead of Bonham's sale of vintage cars, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915045 )

The 2013 Harley DavidsonSuper Glide Custom A 1,585cc Harley-Davidson Dyna Super Glide, donated to Pope Francis last year and signed by him on its tank, is displayed ahead of Bonham's sale of vintage and classic cars, at the Grand Palais in Paris, Wednesday, Feb. 5, 2014. The bike will be sold at auction to help raise funds for a soup kitchen and hostel for the homeless in Rome. (AP Photo/Thibault Camus) ( France Auction Cars )

A 1968 Ferrari 275GTB/4 is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914047 )

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

A BMW Isetta 300 is seen on the wheel of a vintage car, during an exhibition by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915053 )

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

A 1962 Chevrolet Corvette is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915067 )

Vintage cars are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914067 )

A Mercedes logo is seen on the wheel of a vintage car, during an exhibition by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915011 )

A 1947 Delage D6 is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914041 )

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

A 1968 Ferrari 275GTB/4 is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914037 )

Vintage cars and motorbikes are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914049 )

Vintage cars and motorbikes are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914045 )

A Rolls Royce logo is seen on a vintage car, during an exhibition by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914099 )

A employee cleans the 2013 Harley Davidson 1 585 cm3 Dyna Super Glide Custom, donated to Pope Francis last year and signed by him on its tank, ahead of Bonham's sale of vintage cars, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915055 )

A 1929 Bugatti Type 35B Grand Prix is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914061 )

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, Feb. 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. (AP Photo/Thibault Camus) ( France Auction Cars )

A 1935 Mercedes 500K is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914029 )

A 1935 Mercedes 500K is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914039 )

A Mercedes logo is seen on a vintage car, during an exhibition by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914237 )

Vintage cars and motorbikes are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914059 )

Vintage Rolls Royce cars are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914073 )

Vintage Rolls Royce cars are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914077 )

A vintage Chevrolet Corvette car is displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915023 )

The 2013 Harley Davidson 1 585 cm3 Dyna Super Glide Custom, donated to Pope Francis last year and signed by him on its tank, is displayed ahead of Bonham's sale of vintage cars, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915033 )

A Harley Davidson logo is seen on the 2013 Harley Davidson 1 585 cm3 Dyna Super Glide Custom, donated to Pope Francis last year and signed by him on its tank, ahead of Bonham's sale of vintage cars, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915035 )

A 1962 Facel Vega Facel II is displayed ahead of a sale of vintage cars by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915041 )

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

The 2013 Harley Davidson 1 585 cm3 Dyna Super Glide Custom, donated to Pope Francis last year and signed by him on its tank, is displayed ahead of Bonham's sale of vintage cars, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466915025 )

Vintage cars and motorbikes are displayed during an exhibition, by Bonhams auction house, at Le Grand Palais on February 5, 2014 in Paris, France. (Photo by Antoine Antoniol/Getty Images) ( 466914043 )