 Complete the following phrase:  On 8 June 2006, Sakon Yamamoto joined the Super Aguri F1 team as their test driver and third driver on grand prix weekends, helping Takuma Sato and Franck Montagny in Fridays free practice sessions. Yamamoto replaced Montagny in the second team car at the German Grand Prix in Hockenheim. He did not enjoy a particularly successful start to his career, however, with a mechanical failure and a stalled engine restricting him to a total of one lap in his first two races. He also damaged one of the teams new SA06 chassis in a crash during Free Practice at the German Grand Prix. He then spun out of his third Grand Prix in 