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Video: The Porsche Panamera Sport Turismo concept build process

Porsche has released a video featuring Style Director Michael Mauer charting the design process of the Panamera Sport Turismo concept. The 10-minute YouTube video, which also features General Manager Advanced Design Style Mitja Rorkert, follows the build process through each modeling phase right up until the presentation of the show car at this year's Paris motor show. "It always presents a special challenge when we develop a new kind of car for the Porsche brand," says Mauer, "precisely because we haven't been in the segment before, and the question of whether it matches the Porsche brand always looms in the background." We were impressed at the Panamera Sport Turismo concept's unveiling, particularly with its stance and detail execution, so the video is a chance to see just how this concept came into being.

Tesla loses $38 million in third quarter

Tesla Motors, Inc. posted a net loss of $38 million on $431 million in revenue during the third quarter -- a steeper loss on slightly higher revenue than in the second quarter. In the third quarter of 2012, when Tesla was just starting production of the Model S, the automaker lost $111 million on $50 million in revenue.

Dinner with Bob Lutz: Looking back at nearly 50 years in the car business

Bob Lutz is retiring--again. He has tried this twice before: at Chrysler in 1998 and with his abortive exit from General Motors last year. But this time, at age 78, it may stick, even for the car guy who has operated at the industry's highest levels since the early 1970s.