The rise of Red Bull Racing as one of the dominant teams in Formula One was also marked by intense competition between its two drivers Sebastian Vettel and the Australian Mark Webber. Vettel won four world championships but for Webber a world title would elude him until he left the sport in 2013. He opens up to Extratime about the triumphs and frustration of his time at Red Bull and his new career at Porsche endurance car racing. Show less