6737 Southwest Freeway – Houston TX (built ~1966)
Southwest Dodge, later and more well-known as Southwest Lincoln-Mercury, was owned by NFL team owner Bud Adams and was reportedly the “newest and most modern [building] in the world” and the “most complete dealership in Dodge history,” according to the Bellaire and Southwestern Texan. “The world’s largest Dodge Dealer” had its grand opening on October 1, 1966.
Image from the 1970 Houston City Directory:
Advertisement from the October 26, 1966 issue of the Bellaire and Southwestern Texan: