Those who need big SUVs for towing or other reasons can now benefit from the fuel savings provided by hybrid drive trains. General Motors' full-size Chevy Tahoe Hybrid and GMC Yukon Hybrid both have a two-mode hybrid system that can cut fuel consumption by as much as 50 percent in city driving. Freescale's 32-bit Power Architecture controls the power inverter module that's the basis of the hybrid system. The chips help assure smooth transitions during transitions from gasoline to electric power. The two-mode system, developed in conjunction with Chrysler, Mercedes and BMW, sometimes operates with both electric and gasoline engines to improve performance and economy.
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