From the December 2005 issue of Car and Driver, page 42, there was

1) Audi Q7 hybrid concept: Porsche Cayenne/VW Toureg will get gas-electric hybrid version for 2008. Battery stored below the rear compartment, where the spare tire usually is.



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2) Mercedes Benz S350 Direct Hybrid (3.5 L gas-electric) and Blutec Hybrid (3.2 L diesel-electric)



Click here for a jump to the official press release, more pictures, explanation