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

McLaren's latest P12 teaser video

McLaren has followed up its announcement that its Paris-bound P12 hypercar, teased with an image last week, by releasing a video that suggests the shape and aerodynamics we can expect from the car. The video shows a series of lights passing over an invisible object – the P12 – and using the lightshow it is possible to imagine the general shape of the car, without any detail of course. If the P12's unveiling is anything like the light show in the video, it should be a fantastic experience in Paris.

The 10 most patriotic car-buying states

With a holiday coming around the bend with the main premise of patriotism, ’Merica and fireworks, here is a compilation of analytics to show off which states remain loyal to the domestics. Santa Monica, Calif.-based TrueCar reports that the most patriotic state, most likely to buy a new domestic car or truck, would be the Motor City. These statistics were compiled using transaction figures based on domestic vehicle sales.

Vauxhall & Opel could merge with Peugeot Citroen.

GM Europe (Opel and Vauxhall) could extend their deal with PSA (Peugeot Citroen) with a Joint Venture or merger. When GM Europe and PSA announced they were forming an alliance earlier this year, we asked if this was an admission that the mainstream car market in Europe had changed forever, and an alliance between Opel, Vauxhall, Peugeot and Citroen was the only way to keep the brands viable. But we did also question what use a projected annual saving of €2 billion by sharing suppliers and co-developing platforms would be to PSA and GM considering their woeful losses.