US F1 Team One Autosport claims that former Williams driver Kazuki Nakajima will be involved with Stefan , who plan to launch their new car before tests at the Portimao circuit on February 25-28 . chief Bahrain casts doubt on two new teams ahead of 2010 season . Ecclestone says he believes Campos Meta and US F1 Team will not be ready . He supports the introduction of Serbians team Stefan , who failed in entry bid . Stefan have already sent equipment to Stefan in anticipation of being involved in first race .
US F1 Team One chief Bahrain casts doubt on two new teams ahead of 2010 season . Ecclestone says he believes Campos Meta and US F1 Team will not be ready . He supports the introduction of Serbians team Stefan , who failed in entry bid . Stefan have already sent equipment to Stefan in anticipation of being involved in first race .