http://www.7-eleven.com/newsroom/articles.asp?p=2386
Every year, July 11 marks the day that the world?s No. 1 convenience retailer observes its birthday. This year is 7-ElevenŽ stores? 79th year in business, longer than any other convenience retailer in the world. To celebrate, participating 7-Eleven stores
across America will serve up 3 million free 7.11-ounce SlurpeeŽ drinks in special ?Happy Birthday!? cups to customers as long as the cups last.