Puncture Cost Randy Pobst the Lead in Speed GT Series Share Comments A puncture cost Audi driver Randy Pobst the lead in the GT class of the North American SPEED World Challenge. At Infineon Raceway, Pobst was running in sixth place with the Champion Team’s Audi RS 6 Competition, as he was forced to pull into the pit due to puncture three laps before the end of the race. This threw him back to 15th place. Title defender Micheal Galati finished sixth in the other Audi RS 6 Competition. The next race of the SPEED World Challenge takes place already next Sunday at Road America. “This track should suit our car much better,” said Pobst, who is now nine points behind Bill Auberlen in the overall points ranking. For more discussion on this story, click on the link to our discussion forums at the left.