Giedo van der Garde was Sauber 's test driver last season . He claims he was promised a full-time race seat for the 2015 season . But Sauber hired Marcus Ericsson and Felipe Nasr instead . Formula in Australia will announce their decision on Wednesday . First race ( Australia ) of the Supreme Court One season starts on March 15 .
Giedo van der Garde was Sauber 's test driver last season . He claims he was promised a full-time race seat for the 2015 season . But Sauber hired Marcus Ericsson and Felipe Nasr instead . Supreme Court in Australia will announce their decision on Wednesday . First race ( Australia ) of the Formula One season starts on March 15 .