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One of the biggest travel weekends of the summer kicks off today - but many Americans will be staying home to save money. While gas prices have eased up a bit in recent days, fuel is still expensive enough that some families are skipping their summer road trip. The current national average for a gallon of gas is $4.84 - though some gas station chains such as Sheetz or Buc-ee's are offering cheaper gas for 4th of July weekend.