Active Fuel Management to Replace GM's Displacement on Demand

In the automotive business, not everything an automaker does makes sense all of the time, at least at first glance. Take one of General Motors' most integral new fuel savings technologies, Displacement on Demand (DoD). The Detroit-based automaker forged new territory with its electronic cylinder-deactivation system, showing working prototype versions long before Big 3 rival DaimlerChrysler beat them to the punch