The General Motors hybrid system in these buses uses the...

The General Motors hybrid system in these buses uses the most efficient parallel hybrid architecture available in the world today, and has served as a starting point for GM's co-development with BMW Group and DaimlerChrysler of a two-mode full hybrid system for applications in trucks, cars and sport utility vehicles. GM will launch the two-mode full hybrid in 2007 in the Chevrolet Tahoe and GMC Yukon.