 Following some impressive Friday test performances at Turkey and Italy, BMW Sauber's 19-year-old test driver, Sebastian Vettel, had agreed to see out the rest of the year with the German team.The young German driver had a busy schedule, as he was also competing in the Formula 3 Euroseries.With the sacking of Christian Klien, Red Bull announced that Robert Doornbos would replace him for the final 3 Grands Prix.