In Imola, Sauber celebrated its 600th grand prix, from its humble F1 beginnings in 1993 through a rollercoaster of manufacturer and independent stints before morphing into the Audi works team next year. One man was there for every single race, and as Sauber celebrated its anniversary, so did long-time sporting manager Beat Zehnder. Zehnder has seen it all: Mercedes, BMW and Red Bull all coming ...Keep reading