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• GM unveils eco-friendly concept Cadillac

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• Automotive
• CES

GM's Cadillac Provoq, which runs on a hydrogen fuel cell and a lithium-ion battery, is the first concept car to get its premiere at CES. Someone drove the car onstage as GM CEO Rick Wagoner unveiled it during his keynote speech Tuesday. There is no release date yet.

Credit: Michael Kanellos/CNET News.com

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