アレクサンダー・ヴルツ
Williams announced that they were using a revised FW28, the Williams-Cosworth FW28A. The car featured a new aerodynamic package developed by test drivers Alexander Wurz and Narain Karthikeyan. The test team also carried out the first track test of the Toyota-powered interim Williams FW28B. The car itself completed 745 kilometres and the team only experienced minor problems.