The Detroit motor show

General Motors EN-V 'urban mobility concepts'. With sensor and camera systems, the EN-V can 'sense' what’s around it, allowing the vehicle to react to obstacles or changes in driving conditions. They are typically 1.5 metres long and weigh less than 500kg Photograph: Paul Sancya/AP

The Mercedes Benz SLS AMG E-Cell, one of the new 'alternative fuel cell' cars - it can run on energy-saving or 'sports' mode Photograph: Paul Sancya/AP

A cut-away shows the interior of a Ford Explorer at the media preview Photograph: Tannen Maury/EPA

A model poses with the Ferrari 458 Italia; work is done on the Maserati Gran Turismo S (middle) exhibit; a 1970 Fiat 500 (top) Photograph: Paul Sancya/AP

The Mini Concept car debuts at The North American International Auto Show in Detroit Photograph: Kamil Krzaczynski/EPA

The Audi A6 is seen during the press preview of the North American International Auto Show Photograph: Stan Honda/AFP/Getty Images

The BMW 650i convertible is unveiled Photograph: Kamil Krzaczynski/EPA

Hyundai Velostar vehicles debut at the show Photograph: Paul Sancya/AP

The Kia KV7 van concept vehicle with its unique doors Photograph: Stan Honda/AFP/Getty Images

The Toyota Prius C Concept vehicle Photograph: Paul Sancya/AP

A Tesla Model S Photograph: Paul Sancya/AP

Journalists get a look a the new Porsche 918 RSR sports car Photograph: Stan Honda/AFP/Getty Images

The new Chrysler 300 Photograph: Tannen Maury/EPA

A man walks through the Audi display during press preview day at the car show Photograph: Geoff Robins/AFP/Getty Images

People looking at the new Volkswagen Passat Photograph: Mark Blinch/Reuters

A Mercedes Benz SLS AMG billboard is shown on a building along the Detroit skyline Photograph: Paul Sancya/AP