This time around, according to an (admittedly unsubstantiated) rumor on Silicon Alley Insider, rather than Jobs, executive search firm Spencer Stuart is said to be promoting Tim Cook. Cook is the chief operating officer at Apple and second in command to Jobs, filling the CEO slot on an interim basis last year while Jobs was on medical leave.
Cook would certainly be an interesting choice, and if hired, would join fellow tech industry vet and new GM CFO Chris Liddell who is coming over from Microsoft. It's not clear, however, if he would be the best choice. As COO, Cook has had plenty of operational experience at Apple, and by all accounts, he has done an outstanding job running day-to-day operations. However, according auto industry analyst Jim Hall of 2953 Analytics, the CEO at GM is traditionally the big picture/visionary position. In that respect, Cook would seem better suited to the President/COO role, a job recently awarded to Mark Reuss.
[Source: Silicon Alley Insider]