DETROIT – General Motors Corp. was the company to return efficiency enhancing engine cylinder deactivation to the technology landscape, but crosstown rival DaimlerChrysler AG apparently will be the first auto maker to actually put engines so-equipped into customers’ hands. Although GM has talked for nearly two years about its plan to revive the technology that flopped two decades ago – GM calls its systems Displacement on Demand (DOD) – it now appears DC will beat GM to market by several ...

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