When a superstar steps away from arc lights to chase speed on an unforgiving racing track, the story demands more than spectacle. It needs soul. The upcoming documentary on Ajith Kumar's passion for motor sports seems to understand that, and it just gained an important new voice with GV Prakash Kumar joining the team as composer and singer.Sharing a new video announcing his involvement, GV Prakash expressed his excitement about teaming up once again with Ajith and director AL Vijay. "Joining hands with AK sir again.. mass a class a tracks and OSTs on the way...