General Motors Corp. is touting its Displacement on Demand (DOD) technology, featuring it on three of its four concept vehicles unveiled today at the North American International Auto Show in Detroit. Chevy SS The fuel-saving technique, which seamlessly deactivates and reactivates cylinders periodically while driving, will debut in 2004 on some ’05 models. Apparently, GM intends to use DOD across its lineup. The show vehicles unveiled this year include a pickup truck, ...

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