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Maserati Quattroporte

Maserati has revealed the first pictures and details of the 2013 Quattroporte ahead of its official debut at the Detroit auto show in January. The sixth-generation Quattroporte, a high-performance sports luxury saloon, will be the first of three new models that Maserati hopes will begin to increase its annual sales. The car retains some of the design cues from the outgoing model, namely the front grille, three side vents and the triangular C-pillar, while it also features a sharp beltline that rises towards the car's rear and runs through the side of the car.

GM to double size of battery lab

General Motors says it will spend $8 million to double the size of its Global Battery Systems Lab, which the company claims is the largest and most technologically advanced automotive battery lab in the United States. GM says the expansion will speed up the development of hybrid and electric vehicles, such as the upcoming Chevrolet Volt, by improving on-site testing of battery cells and systems. When finished, the lab will be 30,000 square feet bigger than it is now, for a 63,000-square-foot total.

Porsche future products: Small SUV, entry-level roadster in the plan

Porsche plans a major expansion of its product range by the middle of the decade. CEO Matthias Mueller has promised at least one new model a year, starting with the redesigned 911 that arrives in February. An SUV that is smaller than the Cayenne will be added, along with an entry-level roadster.