The first race of the season would come in the C9 with Karl Wendlinger as his co-driver .
After ending the 1989 with victory in Mexico , Jochen would start the 1990 season partnered with the young guns .
The first race of the season would come in the C9 with Karl Wendlinger as Jochen 's co-driver .
After ending the 1989 with victory in Mexico , Jochen would start the 1990 season partnered with the young guns .