Nissan Motor expects to appoint a new chief executive officer (CEO) by the end of October, following the resignation earlier this month of Hiroto Saikawa for financial improprietry after he admitted to being overpaid JPY47bn (US$437,000) in performance-linked remuneration. The Japanese carmaker is currently led by caretaker CEO Yasuhiro Yamauchi, a 63-year-old long-serving director of the company.