In 2009 Super GT season, Choo spot-raced in the Malaysia round for the Thunder Asia Racing with Martin Short and became the first Singaporean driver in the event. Their team finished 13th in GT300 class. He and the team would be fully involved in the 2010 Super GT season, while he was also appointed as the official negotiator of Super GT to promote the event in Singapore, including a possibility to bringing the race to Singapore in future.
Complete WTCC results
(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)