Gas prices are expected to drop like a rock over the next few days. The Oil Price Information Service says the national average could plunge from two-78 today to as low as two-50 by Tuesday. Triple-A says prices have already fallen by six-cents per gallon over the last week. Analysts say rising oil production throughout the world and growing stockpiles are the key reasons behind the drop. The drop comes as gas prices approached a four-year-high last month.
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