Despite losing their technical director a few days before the first test of the 2012 season, Sauber is ready to go with its C31, which ran today in Jerez. Kamui Kobayashi covered an impressive 106 laps, the most of any of the new cars. Like many 2012 cars, the C31 is an evolution of the 2011 car, but there is one significant difference. Like their friends and allies at Ferrari, who supply the engines, the team has switched to pullrod suspension, albeit only at the rear. Ferrari has gone for pullroad suspension front and rear, which is much more edgy. More…