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Spied on the street: Porsche Panamera

Yes, Porsche has given up several official photos of the Panamera sedan ahead of the car's expected official rollout at the Shanghai auto show in late April. That means prototypes on the road have stripped off the camouflage. But it's still interesting to see the car in a natural setting.

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.

Rolls-Royce Phantom app launches

No, the Rolls-Royce Phantom app doesn't call a chauffer to bring 'round the Rolls, nor does it summon the butler to fetch some Grey Poupon. The free app, available for the iPhone, the iPod Touch or the iPad's app store as of Thursday, allows Rolls-Royce coveters and clients alike to customize their own virtual version of luxury dynamo. Users can create individualized virtual versions of the car, applying any mix of trims and colors.