The Red Bull RB2 is the car with which the Red Bull Racing team competed in the Formula One season. The chassis was designed by Mark Smith, Rob Taylor and Ben Agathangelou and the engines were supplied by Ferrari. It was driven by David Coulthard and Christian Klien, who had both driven for the team in its debut year, . However, Klien was replaced after the Italian GP by third driver Robert Doornbos after the Austrian refused the team's offer of a ChampCar seat for 2007 once it became apparent that he was going to be replaced by Mark Webber for the next season.