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A closer look at the 2015 BMW M3 sedan and M4 coupe: Turbocharged performance is gonna cost you

By the time the 2015 BMW M3 sedan and M4 coupe were revealed at the Detroit auto show, we already knew a lot about what to expect from the Roundel's newest generation of high-performance driving machines. It was no secret, for example, that the new M3 sedan and its two-door counterpart, the M4, will be down two cylinders and a few hundred pounds from their predecessors. Now that we've had a chance to get a look at the cars in production trim, here's a closer look at what's under all the aggressively vented fascias, spoilers and M badges.

Range-topping 2014 Buick LaCrosse debuts in China

Shanghai GM has just unveiled the top version of the popular Buick LaCrosse sedan in China, with its debut of the LaCrosse 3.0-liter V6 SIDI IntelliTech Flagship model. This move now brings the total number of trim levels available on the LaCrosse to seven. The Chinese-market LaCrosse is a locally produced sedan that is visually identical to the American model on the outside.

Tesla: Factory on track for 2012 Model S launch

At Tesla Motors Inc.'s first annual shareholders meeting since going public last July, Tesla CEO Elon Musk provided a vision of using the full capacity of the former New United Motor Manufacturing Inc. plant it acquired from Toyota. He also discussed a string of electric vehicles and the possibility of a chain of company-owned charging stations and battery-swap facilities.