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Chevrolet Volt visits the wind tunnel

By Ben Whitworth First Official Pictures 13 December 2007 10:00 Back in January the Volt was easily the surprise of this year’s Detroit motor show. Chevrolet reckoned its radical electric four-seater was such a breakthrough that it would transform the way we drive when it arrived in showrooms by the end of the decade. And it’s just announced that the production model will be significantly more efficient at scything through the air: the Volt has been sent to GM’s wind tunnel where Chevrolet’s aerodynamicists has smoothed off some of its blunt surfaces to create a shape that is 30 percent more effective at cutting cleanly through the air at speed than the original concept.

Mazda MX-5 1989-2014 in pictures: 25 years of everyone's favourite roadster

It's hard to believe but the Mazda MX-5 celebrates its 25th birthday this year, writes Adam Binnie. The occasion will be marked with a special edition model, before the launch of the fourth-iteration MX-5 in September 2014. The MX-5 earned the title of 'bestselling two-seater sports car of all time' from Guinness World Records in May 2000, after global production reached 531,890 units.

Mercedes ML63 AMG gets a tweak

The very slightly tweaked 2011 Mercedes ML63 AMG Somehow, the Mercedes ML63 AMG doesn’t quite make it in to our heads when we thing of barking mad, ‘too powerful for their own good’ SUVs. Top of that list is filled by the Porsche Cayenne Turbo with the BMW X5M and X6M bringing up the reserve position. But we should consider it.