Former CEO of Jeep, Christian Meunier, has been hired by Nissan as the chairman for North and South America.Meunier will be responsible for leading both the Nissan and Infiniti brands in the region.He aims to improve profitability and increase sales, acknowledging the potential for a turnaround.Meunier's appointment comes amidst a challenging period for Nissan, with declining sales and hybridization delays.