A model stands next to a BMW X6 AC Schnitzer car at Auto China 2012 in Beijing in this April 24, 2012 file photo. Amid the razzmatazz, music and crowds at the Shanghai autoshow on Monday, hundreds of attractive young women, and men, mingled among the stands and company booths, introducing the newest sedans and handing out pamphlets. For years, models have been a staple at China's big autoshows – as much of a draw as the latest car models themselves. 2015 is different – the organisers have banned models from the Shanghai show. (Photo by Jason Lee/Reuters)

Lexus's ES 300h is seen during a presentation at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Aly Song/Reuters)

A woman takes pictures of a Toyota Levin HEV car during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. Foreign automakers continue to plough money into factories in China, the world's largest car market, even as the biggest economic slowdown in a quarter of a century crimps sales growth. (Photo by Aly Song/Reuters)

A man looks at a Toyota car during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Aly Song/Reuters)

Workers prepare an exhibition stage next to a Mercedes Benz concept GLC Coupe during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Aly Song/Reuters)

Models stand next to a JAC car vehicle during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. Amid the razzmatazz, music and crowds at the Shanghai autoshow on Monday, hundreds of attractive young women, and men, mingled among the stands and company booths, introducing the newest sedans and handing out pamphlets. For years, often skimpily dressed female models have been a staple at China's big autoshows – as much of a draw as the latest car models themselves. This year is different – the organizers have banned models from the Shanghai show. Indeed, as China's premier car exposition opened on Monday, the tone was more subdued, though models said many had found ways to get around the crackdown. (Photo by Carlos Barria/Reuters)

A model poses for pictures next to a JAC car during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Carlos Barria/Reuters)

A staff personnel stand next to a Volkswagen car during 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Carlos Barria/Reuters)

A model poses for pictures next to a JAC car during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Carlos Barria/Reuters)

Visitors walk around Mercedes Benz cars during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Carlos Barria/Reuters)

Visitors stand next to a Chery car during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Carlos Barria/Reuters)

A visitor walks next to a Chery car during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Carlos Barria/Reuters)

A model poses for pictures next to a JAC car during the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Carlos Barria/Reuters)

The Mercedes-Benz F015 Luxury in Motion autonomous concept car is seen during a presentation at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, April 20, 2015. (Photo by Aly Song/Reuters)

Dancers introduce the latest car from Japanese automaker Toyota at the Shanghai Auto Show in Shanghai Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

A worker pokes his cheeks as he works at the booth for Peugeot at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. Ford showed off its new Taurus and Nissan unveiled a midsize sedan designed for China on Monday at a Shanghai Auto Show that highlighted the commercial resurgence of lower-priced Chinese auto brands. (Photo by Ng Han Guan/AP Photo)

The Ford Taurus is unveiled during the opening of the Shanghai Auto Show in Shanghai, China, Monday April 20, 2015. (Photo by Ng Han Guan/AP Photo)

Attendees look at the latest car from BMW at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

Attendees take a look at the latest cars from Chinese automaker Haval at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

A man takes a photo of Nissan's Lannia, a midsize sedan designed for Chinese buyers at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

A Chinese woman waits to help attendee understand the MG car on display at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

Taiwanese performers introduce a new car from Luxgen, a joint venture between state-owned Dongfeng Motor Co. and Yukon, a Taiwanese partner in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

Attendees look at the latest car from BMW at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

A worker cleans a car from Chinese automaker Hong Qi at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

A man rests near an oversized truck displayed at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

A visitor takes a photo of the Geely Emgrand concept car at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

A Chinese woman waits to help attendee understand the MG3 on display at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

Attendees take a closer look at a concept car from Chinese automaker Chery at the Shanghai Auto Show in Shanghai, Monday, April 20, 2015. (Photo by Ng Han Guan/AP Photo)

China FAW Group Corp.'s Hongqi brand L5 vehicle is displayed at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

China FAW Group Corp.'s Hongqi brand H7, left, and LS5 vehicles are displayed at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

China FAW Group Corp.'s Hongqi brand H7 vehicle is displayed at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

A Toyota Motor Corp. Ranz electric vehicle, right, stands on display at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

A worker looks at a Toyota Motor Corp. Levin hybrid electric vehicle, left, at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Chery Automobile Co. Alpha 5 stands on display at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Honda Motor Co.'s Concept D sport-utility vehicle (SUV) stands on display at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Visitors try a Volkswagen AG XL vehicle at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Toyota Motor Corp.'s Leahead brand electric vehicle stands on display at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

A visitor walks past a Toyota Motor Corp. Mirai fuel cell vehicle (FCV) at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Great Wall Motor Co. Haval brand vehicles stand on display at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Jiangling Motor Co.'s Landwind X7 sports utility vehicle (SUV) is displayed at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Honda Motor Co.'s Concept D sport-utility vehicle (SUV) stands on display at the 16th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2015) in Shanghai, China, on Monday, April 20, 2015. (Photo by Tomohiro Ohsumi/Bloomberg)

Visitors look at the Porsche 911 GT3 on display at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, China, 20 April 2015. (Photo by How Hwee Young/EPA)

Models pose beside the Mini Cooper Countryman car on display at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, China, 20 April 2015. (Photo by How Hwee Young/EPA)

A visitor tries out a Hyundai virtual reality simulator at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, China, 20 April 2015. (Photo by How Hwee Young/EPA)

A visitor sits in a Volkswagen “Think Blue” slogan chair at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, China, 20 April 2015. (Photo by How Hwee Young/EPA)

Visitors take photos of the Ferrari 488 GTB on display at the Ferrari booth at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, China, 20 April 2015. (Photo by How Hwee Young/EPA)

Visitors take photos of a Lexus car on display at the 16th Shanghai International Automobile Industry Exhibition in Shanghai, China, 20 April 2015. (Photo by How Hwee Young/EPA)

A woman poses next to a Porsche 911 Carrera Style Edition at the 16th Shanghai International Automobile Industry Exhibition in Shanghai on April 20, 2015. Global car makers showed off hundreds of vehicles in China's commercial hub Shanghai on April 20, as the world's biggest auto market continues to attract despite a sharp deceleration in sales growth. (Photo by Johannes Eisele/Getty Images)

A VW XL1 concept car is displayed at the 16th Shanghai International Automobile Industry Exhibition in Shanghai on April 20, 2015. (Photo by Johannes Eisele/Getty Images)

A BMW X5 xDrive 40e is displayed during a presentation at the 16th Shanghai International Automobile Industry Exhibition in Shanghai on April 20, 2015. (Photo by Johannes Eisele/Getty Images)

A Toyota FV2 concept car is displayed at the 16th Shanghai International Automobile Industry Exhibition in Shanghai on April 20, 2015. (Photo by Johannes Eisele/Getty Images)

An Audi Q7 e-tron car is unveiled during a presentation at the 16th Shanghai International Automobile Industry Exhibition in Shanghai on April 20, 2015. (Photo by Johannes Eisele/Getty Images)

An Aston Martin limited series Lagonda luxury car model is unveiled at the 16th Shanghai International Automobile Industry Exhibition in Shanghai on April 20, 2015. (Photo by Johannes Eisele/Getty Images)