In 1991, Sauber broke into the world of Formula One, starting an F1 team with Harvey Postlethwaite’s involvement. In 2005, Sauber’s team was acquired by BMW, with Sauber retaining 20% ownership of the team. The new name of the team is BMW Sauber, and it went on to do pretty good things within the world of Formula One racing. Then in 2009, BMW announced its withdrawal from Formula One racing, and Sauber worked to keep the team going in the wake of the exit of its primary sponsor. After talk of another company buying the team, BMW ended up selling the team back in full to Peter Sauber.