Convenience store chain Circle K has a back-to-school deal that can bring your gas expenditure to a record low, at least for one day. Circle K, which has more than 4,000 stores in 22 states, is giving members of its Inner Circle loyalty program 40 cents off per gallon on Thursday,

Convenience store chain Circle K, which has more than 4,000 stores in 22 states, is giving members of its Inner Circle loyalty program 40 cents off per gallon on Thursday, Aug. 21.