Circle K is a trademark owned by the ConocoPhillips oil company to designate a chain of company operated and franchised convenience stores in the United States. Some of these stores operate gasoline pumps selling Union 76 branded motor fuels, others sell Mobil branded fuel. The chain is still operating internationally, branching into other continents like Asia.
The cult-classic film Bill and Ted's Excellent Adventure features the well known line by Keanu Reeves, "Strange things are afoot at the Circle K."
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