''Lots of people enjoy the sport of speculating about management succession at Ford,'' he said. ''In fact, we're getting used to it, but we certainly aren't going to comment on such speculation.'' Mr. Ford has been the rising star at Ford Motor for several years, where he is now the chairman of the board's finance committee, but holds no position as an executive now. Before that he worked in various jobs, having run a truck engineering center and served as a senior executive at Ford Switzerland. The Ford family controls 40 percent of the voting power on the board through its ownership of a special class of stock.