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

Porsche 918 RSR

Following an absence of four years from the NAIAS, Porsche had been promising an all new concept to its North American contigency. The 918 RSR is exactly that. Evolving from the 2010 918 Spyder concept shown in Geneva, the RSR stays true to the overall theme of the Spyder but adds a roof and race-specific elements.

Making of the Porsche Panamera Sport Turismo (video)

Porsche has released a video chronicling the development of the Panamera Sport Turismo as the first model extension of the Panamera. Earlier this month we had a video from Porsche of the Panamera Sport Turismo on the move with comments and insights on the design process, and now we get a more detailed look at the development and thinking behind the transition from ugly duckling Panamera to stunningly good looking Panamera Sport Turismo. Porsche don’t want to call the Sport Turismo a Station Wagon, but that is effectively what the Sport Turismo is (and it can’t be a true Shooting Brake with four doors).

A look at future Nissan products

The push for fuel economy leadership will heavily influence the look and performance of Nissan's new products for the next three years. The effort will be focused on three primary areas: cutting vehicle weight, improving aerodynamics and reducing friction in the engine and transmission. Those three priorities already can be seen in the 2013 Altima, which went on sale in June with 20 percent better fuel economy than the outgoing model.