Saab Automobile's vice president - powertrain, Kjell Bergström, is to head up technical development in a new GM-Fiat powertrain joint venture company. Bergström takes up his new position in Turin, Italy, in March where, as vice president - product engineering, he will be responsible for all new engine and transmission projects for Saab, Alfa Romeo, Lancia and Opel/Vauxhall.