Charismatic CEO Carlos Ghosnhas driven Nissan’s historic turnaround with a simple leadership strategy: State a lofty goal, and expect everyone to meet it. Examples:In 2000, he issued a directive to cut purchasing costs 20 percent and halve the number of suppliers. Nissan hit that goal in 2002.In 2002, he announced that Nissan’s net debt would drop to zero. Nissan hit that one in 2003.In 2005, he vowed that Nissan would sell 4.2 million cars and trucks. That will probably happen, given Ghosn’s track record.— Adapted from “Nissan’s Boss,” Business Week.