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Audi R18 TDI (2011): first pictures of the new Le Mans racer

This is the new Audi R18, Ingolstadt’s latest LMP1 endurance racer which will compete in the 2011 Le Mans 24 Hours. Compared to its R15 predecessor, the new Audi R18 has gained a roof and the mandatory-for-2011 ‘shark fin’ engine cover, but it’s lost four cylinders – the R18 is powered by a turbocharged V6. It is – like the R10 and R15, the R18 is an oil-burner.

Lamborghini Aventador spy photos: The Roadster in the Snow!

Lamborghini is set to crack the top off the Aventador supercar, and the V12-powered speed demon spyder has been captured in cold-weather testing in Sweden. Obviously, this Dancing Bull is adept in the snow, as these shots show the all-wheel-drive system conquering the wet and wild of the far north. It's expected to run a 6.5-liter, 691-hp V12 paired with a seven-speed automated-manual gearbox.

The great British motorway speed limit debate

Associated Press As the government plans a 60mph limit on a 32-mile section of the M1, Britain's speed limits are under the spotlight as never before. The lower limit was announced this week as part of a project to improve air quality in Derbyshire and Yorkshire. If approved, drivers will not be able to exceed 60mph between junctions 28 and 35a between 7am and 7pm.