DETROIT -- At its heart, the North American International Auto Show is a display of automotive performance. But this year, the Motor City's century-old roots in the auto industry are showing greener than ever before.
With gasoline prices around $3 a gallon and $100 oil still fresh in drivers' minds, automakers stepped up efforts to go green -- even if the evidence sometimes came in faraway concept cars.
New hybrids, fuel-cell vehicles and cars and trucks that run on biofuels dot the show floor at the Cobo Center. The auto show opens to the public Saturday.
The trend was especially apparent when an analyst walked by the Ferrari display and saw the F430 Spider Bio Fuel concept vehicle.
"A Ferrari that runs on biofuel?" said Erich Merkle, analyst with IRN Inc. in Grand Rapids, Mich. "What's the world coming to?"
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By Paul Wilson