A new coffee drive-thru is brewing in San Antonio. Coffee-and-donut institution Dunkin' and ice cream-chain Baskin-Robbins will open a combination "new-generation" store next month at 150 S WW White Road, according to officials with Dunkin' Brands. The 2,100-square-foot store is part of a new retail design for the Canton, Massachusetts-based corporation, which operates as parent company for both iconic food chains.