A shakeup at Nissan Motor Co. Ltd. leads to the retirement of six key company officials, part of Nissan 180 — the auto maker's next phase of revitalization. CEO Carlos Ghosn says 18 vice presidents will be moving while six will retire. The most senior is Hisayoshi Kojima, leaving to become president of former Nissan transmission group Jatco TransTechnologies. The reshuffle comes as the Japanese auto maker looks to strengthen ties with Renault SA. Renault plans to increase its share of Nissan to 44.4%, while Nissan plans to take a 15% share of the French car maker. Nissan 180, the second act to the Nissan Revival Plan, will continue the goals of streamlining, debt-reduction and increased profitability, Ghosn says.