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GM says natural-gas Chevrolet Impala on the way

General Motors said it will sell a version of the Chevrolet Impala sedan with the ability to switch between gasoline and natural gas, part of the automaker's plan for taking advantage of a U.S. drilling boom that has made natural gas a more viable fuel for cars. The dual-fuel Impala, to be announced today by CEO Dan Akerson at a conference here, will have one engine and two fuel tanks -- one for gasoline and one for compressed natural gas.

Optima Sports pushes two new tire innovations

WITH VIDEO -- If John Scott has his way, every car on the road will be shod with tires featuring built-in camber. Scott is the owner of Wisconsin-based Optima Sports, a small automotive-engineering firm, and inventor of Camber Tires--tires with a constantly decreasing diameter. According to Scott, his tires offer multiple benefits, including enhanced handling, increased stability, reduced tread noise, improved fuel economy and better safety by reducing rollovers.

Jaguar F-Type: Official

The new 2013 Jaguar F-Type is officially revealed with even more photos and video of Jaguar’s new sports car. Just as we’ve already seen, the F-Type is very much a driver-focused car with a cocooning cockpit and plenty of style and a mission to deliver a sports car with soul, looks and performance. Underpinning the F-Type is a lightweight aluminium structure with all aluminium double wishbones and a quick ratio steering rack, and all that stiff aluminium means a Jaguar that is 30 per cent stiffer than anything that has gone before.