Catching Up to Speed: Tuesday, Aug. 12, 2008

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Recycling exhaust

Biodiesel? Yawn. Reusing that waste is old news. Researchers at General Motors Corp. and at other companies are perfecting a plan to use car exhaust to save gas. This is all in response to an Energy Department challenge to improve fuel economy by 10%. This would save more than 100 million gallons of fuel per year in GM vehicles in the U.S., according to a story by the Associated Press.

Car production news

Chrysler unveils the 2009 PT Dream Cruiser Series 5 and revs up production of the 2009 Dodge Challenger. Plus, Toyota’s new Highlander will be ready six months earlier than planned. Back over at General Motors, Cadillac considers replacing the DTS and STS with one model or just skipping out on large luxury cars altogether.

Getting the most from your mileage

Still worried about pain at the pump? CNN Money answers 11 questions of the mileage-obsessed.

— Whitney Friedlander

Photo (top): 2008 Chevrolet Suburban. Credit: General Motors

Photo (bottom): 2009 PT Cruiser. Credit: Chrysler

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