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GM delays innovative new diesel truck engine

General Motors' deteriorating financial situation has caused the company to delay one of the most advanced engines that it has ever designed, a 4.5-liter diesel for light-duty trucks. "We have to make tough decisions right now," GM Powertrain spokeswoman Susan Garavaglia said. Truck enthusiasts were eagerly awaiting the engine, which would have started production next fall at GM's plant in Tonawanda, N.Y.

Race of Champions preview and video

By Richard Aucock Motor Shows 13 December 2007 10:00 The Race of Champions is the annual end-of-season jamboree. Two drivers from eight nations all go head-to-head, on two parallel 1km tracks, in a series of identical cars, to be eliminated via group stages to determine, in two hours, an overall winner. The fastest of the fast.

Concept Car of the Week: Bizzarrini Manta (1968)

In the latter half of 1965, Giotto Bizzarrini began working on a racing car designed to compete with the Ford GT40, Ferrari 250P and the Porsche 906. The result was the P538, his most sophisticated car to date. The first two examples built were fitted with Lamborghini V12 engines and sold to American buyers to compete in SCCA races, while the third used a highly modified 5.4-liter V8 from the Chevrolet Corvette.