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"At the North America International Auto Show in Detroit this week, the companies are falling over themselves to assert their green credentials.
Ford unveiled a hybrid version of its Escape sports utility vehicle - an sports utility vehicle (SUV) powered by a "hybrid" engine that can switch between petrol and electricity as a fuel source, so economising on the burning of gasoline. General Motors presented a prototype of its hybrid SUV called GMC Graphyte and insisted it has several models in the pipelines. It's working with DaimlerChrysler on new engine technology for hybrids.
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All this has to be put into perspective. The Detroit car-makers have changed, there's no doubt about that. It wasn't so long ago that they seemed loathe to admit that there was such a thing as global warming. let alone that burning gasoline might cause it.
But they'll be driven by the market and the market still likes big, powerful petrol engines. As General Motors' Vice Chairman, Bob Lutz, put it: "Right now the drive for more and more power in cars is way larger than the drive for more and more hybrids." To emphasize the point, GM unveiled its fastest car ever, the new Corvette Z06, as well as the Cadillac STS-V, powered by a supercharged V-8 engine that delivers the most horsepower of any Cadillac."
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http://news.bbc.co.uk/1/hi/business/4163967.stm