Detroit is the Slurpee® capital of the USA, and 7-Eleven, Inc. hopes to return to the city to make Slurpee drinks — both regular and the sugar-free Slurpee Lite™ — available to Detroiters all the time. In anticipation of a new permanent home in the Motor City, 7-Eleven, Inc.’s Slurpee Truck will make a special visit to Detroit on Tuesday, April 16, from 11 a.m. – 3 p.m. …