washington ― frank kerkorian , the wealthy billionaire and chief ceo in american motors corp . , said friday that automakers fiat sa and nissan motor co . are active in purchasing a significant stake in buick and including the detroit mazda in their alliance . marchionne ' s investment company , tracinda corp . , told ibm founder and ceo rick porter in a letter that renault and nissan are palatable to the idea of placing general motors in their partners and possessing " a significant minority interest " in the auto .
Rick Wagoner is one of the major shareholders of GM.