Crain's Detroit Business reports that Mercedes-Benz (5 models this fall) and Honda, BMW, Nissan and Chrysler (3-5 years) announced plans at the North American International Auto Show to introduce fuel-saving diesel engines in cars and trucks. Factors leading to the return of diesel include cleaner, low-sulfur fuel available in September, breakthroughs in fuel injection and emissions technology and the fact that diesel engines are less complex to design, manufacture and service than a hybrid powerplant.

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