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Among gas-electric hybrid powertrains, there are those like the Prius uses that tilt the balance of mpg vs. speed toward maximum economy, and then there are others such as by German makers and the Infiniti M35h, that offer somewhat better mileage and equal or better performance also. On that note, Porsche, which already offers the
+ Read MoreThe Porsche Cayenne line of SUVs – which at first mortified some purists when launched in 2003 – has turned out to be the automaker’s most successful, and the Cayenne S Hybrid introduced in 2007 has a rightful place among them. Now in its second generation since a 2011 model year makeover, it carries forward into
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