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Mercedes-Benz B-Class aerodynamics tested [w/video]

Mercedes-Benz has produced a video testing the aerodynamics of its new B-Class – which it claims is the most aerodynamically efficient car in the world – using a wind tunnel and fluorescent paint. The W245-generation B-Class has the lowest aerodynamic drag in its segment with a Cd of just 0.26, thanks to features such as serrated front wheel arch spoilers, optimized cooling airflow and a Pagoda roof to help airflow over its profile. The car's aero properties were put to the test at the MIRA vehicle test facility in the UK using fluorescent paint in 60mph winds to highlight its flow dynamics, only visible under UV lights.

One Lap of the Web: Fake movie cars, Russian dash cams and 'Forza'

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- We all know most movie cars can be fake, but some are a step above the rest.

Jaguar XJ – the ‘All-Star’ car

The Jaguar XJ receives Automobile Magazine's All Star Award No, ‘All Star’ doesn’t refer to celebs who’ve fallen for the charms of Jaguar’s new XJ, from our own Jaguar-loving Richard Madeley to rap’s own Mr Jay-Zed who featured a new XJ in a recent vid. The ‘All Star’ here is the All-Star Award from America’s Automobile magazine who’ve decided that the new XJ deserves an award, just as the Jaguar XF deserved the same accolade in 2009 and 2010. According to Automobile magazine: “The toughest part about this class is that it’s very hard for any one car to stand out in the crowd, and yet the XJ manages to do just that, in both its design and its dynamics.