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I was particularly excited to hear Dr. Andy Frank, professor of mechanical and aeronautical engineering at UC Davis, give his presentation at the Alt Car Expo. With a title like, "Petroleum Displacement with no Sacrifice in Lifestyle," how could I not? That sounds like a pipe dream. And I don't believe in pipe dreams.

With Toyota dominating the hybrid market, some other automakers are trying to play catch-up (not Ford, of course). But there are different types of hybrid engines, and the dual-mode hybrid system in development by GM and DaimlerChrysler and BMW has won praise from some analysts, but HybridCars.com got dissenting views from two others. UC Davis Professor Andy Frank and Ron Gremban, CalCars Technology Lead both give their opinions on the dual-mode hybrid. In short, they think the system is too cos