
We tested two new night-vision systems that are available in the top-of-the-line Mercedes Benz S550 and BMW 7-Series luxury sedans. They operate on virtually opposite principles-Mercedes illuminates the environment with projected infrared light; BMW detects thermal energy emitted from objects-and each works well under different circumstances.
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Will hybrids make up more than 40 percent of the cars sold in the U.S. by 2015?
Will Chevrolet begin selling a vehicle based on the Volt sequential plug-in hybrid concept by the end of 2010?
