What we have here are two vehicles not particularly high on the Sierra Club's Christmas-card list. The Infiniti FX and the Porsche Cayenne, both hatched in 2003, are the original hardcore performance utes — no third rows of seats here, no hybrid drivetrains (yet), no cute little puffs of water-vapor tailpipe emissions through which cartoon bunnies may frolic. Their social acceptability has fallen as gas prices have risen, and they're probably in danger of becoming an agenda item on the next round of Kyoto protocols.
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