 Complete the following phrase:  He then raced Formula 2 and was present when Jim Clark was killed at the Hockenheimring in 1968. Due to the long Nürburgring track, it was possible to take part in the German Grand Prix in Formula 2 cars. He participated mostly with Brabhams for the Caltex Racing team, and was invited to drive the Brabham-Repco F1 in the wet 