A long row of 2008 Acadia crossover sport utility vehicles is seen at a GMC Truck dealership in the south Denver suburb of Littleton, Colo., on Sunday, April 20, 2008. As gas prices marched higher and now top $3.50 per gallon across the nation, car buyers across the country increasingly are abandoning SUVs and pickups in favor of smaller crossovers and cars. (AP Photo/David Zalubowski)

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