SAN ANTONIO--(BUSINESS WIRE)--CST Brands, Inc. (NYSE: CST), one of the largest independent retailers of motor fuels and convenience merchandise in North America, today reported financial results for the second quarter ended June 30, 2015. Three Months Results “With notable improvements in fuel volumes and strong merchandise sales across our network, including continued strength in same store merchandise sales, we delivered solid results for the second quarter of 2015,” said Kim Lubel, Chairman