Rockies-Cheaper Gasoline

This Wednesday, Jan. 30, 2013 photo shows a sign outside a gas station in Cheyenne, Wyo., that advertises some of the least expensive gasoline to be found anywhere in the United States. According to AAA, Wyoming has the nation's cheapest gasoline, due to its low fuel taxes and a regional abundance of crude oil from Canada and North Dakota. (AP Photo/Mead Gruver)
This Wednesday, Jan. 30, 2013 photo shows a sign outside a gas station in Cheyenne, Wyo., that advertises some of the least expensive gasoline to be found anywhere in the United States. According to AAA, Wyoming has the nation's cheapest gasoline, due to its low fuel taxes and a regional abundance of crude oil from Canada and North Dakota. (AP Photo/Mead Gruver)

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