This is definitely not your father's General Motors. Hoglund, Wagoner, Losh, Battenberg and Mueller may not exactly be household names in the U.S., but in Detroit they are instantly recognized as belonging to some of the most powerful men in the industry. They are among the 15 members of CEO Jack Smith's North American strategy board, which runs all of GM's U.S. operations.
By gathering every week or so as necessary, in shirtsleeves and without their staffs, crowded around a table in the "war room" at GM's technical center, they have broken a chain of command within the mighty corporation that...