Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

McLaren tests MP4-12C GT3 race car

We know the McLaren MP4-12C is fast. But how about the race-car version? Perhaps lost amid the fanfare of the launch of the production car, McLaren has been hard at work on a competition model, the MP4-12C GT3.

General Motors recalls another 8.4m cars

Associated Press General Motors has recalled a further 8.4 million cars as part of an ongoing investigation into a fault that causes the ignition key to turn unintentionally. Almost 30m cars across the US, Canada and Mexico have now been recalled by General Motors in 2014. Approximately 3,500 people are making claims for death or injury The recalls affect cars made as far back as 1997, but the American car maker insists that there is no conclusive evidence that faults with the cars caused crashes involving the vehicles.

Behind The Scenes: Hot Wheels Design Studio [w/Video]

Hot Wheels' vice president of design Felix Holst has spent some time chatting to Cool Hunting about the brand's design philosophy at its Design Studio at Mattel's headquarters in El Segundo, California, in a new video. According to Holst Hot Wheels has evolved from being focused on muscle cars and V8 engines to being all about technology as a reflection of the new generation they're designing for.  He explains the benefits of designing over 240 vehicles a year that aren't limited by rules and regulations, saying in a studio that's driven by pushing the boundaries, it's a question of just how wild they can get.  The video really captures not only the men's passion for their jobs but the fun they have doing it. Small wonder Holst says he'd never go back to car design, and reveals the studio is packed with qualified car designers who chose Hot Wheels over conventional jobs in the industry.  We also hear from Hot Wheels Car Maker's designer Julian Payne, who explains how the new Car Maker – which gives you the chance to mold your own custom Hot Wheels at home – works.