All In The Families

Gianni Agnelli, patriarch of the family that controls automaker Fiat, is the closest thing Italy has to a king. The press hangs on his every pronouncement, whether it's about politics, soccer or business. When a paparazzo is lucky enough to catch him jumping off a yacht in his birthday suit, as one once did, well, that's news too. When Agnelli needs to tell the Prime Minister something, the P.M., whoever he may be, listens intently. But if Agnelli is the king, then the crown prince is Marco Tronchetti Provera,...