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It's amazing what a little regulation can do for an industry. In the past four years, the fuel economy of new vehicles has improved by an average of 14 percent, according to a new study by the University of Michigan. This increase comes on the heels of big hikes in the Corporate Average Fuel Economy, which Congress raised in 2007 for the first time in decades. Since then, CAFE has been set at 34.1 miles per gallon by 2016, and a new proposal that's pending would raise the fuel economy standard t

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It's amazing what a little regulation can do for an industry. In the past four years, the fuel economy of new vehicles has improved by an average of 14 percent, according to a new study by the University of Michigan. This increase comes on the heels of big hikes in the Corporate Average Fuel Economy, which Congress raised in 2007 for the first time in decades. Since then, CAFE has been set at 34.1 miles per gallon by 2016, and a new proposal that's pending would raise the fuel economy standard t

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Hybrid vehicles that combine electric battery propulsion with a gasoline powered motor are supposed to be a huge part of the future. So, why did Nissan decide to kill off its Altima hybrid sedan earlier this year? That move came three years after Honda shelved its Accord Hybrid. The truth is that, despite the success of the Toyota Prius, hybrid technology has been applied badly to several vehicles. Define badly? The system can cost the automaker between $7,000 and $10,000 to install. That cost

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2011 Porsche Cayenne Hybrid – Click above for high-res image gallery

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2011 Porsche Cayenne Hybrid – Click above for high-res image gallery

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2011 Porsche Cayenne Hybrid – Click above for high-res image gallery

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2011 Porsche Cayenne Turbo – Click above for high-res image gallery

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2010 Porsche Panamera 4S – Click above for high-res image gallery

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2011 Porsche Cayenne Hybrid – Click above for high-res image gallery

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SpeedArt Porsche Cayenne SpeedHybrid 450 – Click above for high-res image gallery

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2011 Porsche Cayenne S Hybrid - Click above for high-res image gallery

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2011 Porsche Cayenne Hybrid – Click above for high-res image gallery

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2011 Porsche Cayenne Hybrid – Click above for high-res image gallery

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How much would you pay for a 2011 Porsche Cayenne S Hybrid? If you said at least $67,700, then head on down to your local Porsche dealer this fall and someone will be there happy to take your money. That's the price Porsche announced this week during the New York Auto Show as the new, second-generation Cayenne – and the hybrid model – made their North American debuts. The hybrid SUV, Porsche's first, was unveiled during the Geneva Motor Show about a month ago.

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Porsche 918 Spyder Concept – Click above for high-res image gallery

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