A sign displays gas prices at a gas station Friday, Feb. 17, 2012, in San Diego. Some analysts are starting to worry that rising fuel costs will undermine consumer spending and stymie economic growth. (AP Photo/Gregory Bull)

Associated Press
A sign displays gas prices at a gas station Friday, Feb. 17, 2012, in San Diego. Some analysts are starting to worry that rising fuel costs will undermine consumer spending and stymie economic growth. (AP Photo/Gregory Bull)
A sign displays gas prices at a gas station Friday, Feb. 17, 2012, in San Diego. Some analysts are starting to worry that rising fuel costs will undermine consumer spending and stymie economic growth. (AP Photo/Gregory Bull)
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