The gasoline engine will help propel the SUV up to 70mph and once it achieves that cruising speed the engine will shut off and the electric motor will be used to maintain that speed.
The hybrid is being developed with Audi and Bosch and it will achieve 26.8 mpg. It is expected to start around $44,000.
2010 Porsche Cayenne Hybrid Will Average 26.8mpg
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