It's obviously a tumultuous time for Chrysler, writes John Voelcker. With two thirds of its US sales made up of trucks, light trucks, or crossovers—and insignificant volume outside the US compared to GM and Ford—it's widely perceived as between a rock and a hard place. And despite statements that owner Cerberus Capital Management is in it for the long haul, bets are being laid as to when the private equity firm will have had enough.