Secondary Air Injection Check Valve Dorman 911-150 on 2040-parts.com

BMW Vision Gran Turismo

Ok, so it's only a virtual car for the computer game with which it shares its name, but the BMW Vision Gran Turismo is the result of a project undertaken by the BMW design and engineering departments in Munich. Loosely based around the 2 Series, the car is a neat amalgamation of current BMW design themes and the flamboyance of 1970s touring cars. You don't have to look too hard to see the influence of the CSL Batmobile and fire-spitting E21 320i Turbos.

Bring A Trailer: Renault R5 Turbo 2

We can confidently say that you will never find a Renault R5-based, U.S.-market Le Car that will beat this real R5 Turbo 2 from our friends at BringATrailer.com. This 1984 version is said to have its original paint, less than 22,000 miles and a current—legal—California registration. The Renault R5 hatchback debuted in December 1971 as a 1972 model.

Mercedes GLA goes subterranean

FOR SUV owners looking to test their cars’ off-road credentials, the obvious place to put them to the test probably isn’t nearly 200 metres underground. But that’s exactly where the new Mercedes GLA found itself as it descended into Winsford Rock Salt Mine, 620 feet beneath the Cheshire countryside. The working mine, which supplies much of the UK’s gritting salt for wintry roads, played host to four standard (apart from extra driving lights) GLA models, which were lowered down into the mine nose first before being let loose in the 130-mile network of tunnels.