From GMM

Toro Rosso co-owner, and winner of ten grands prix in the 80s and 90s, Austrian Gerhard Berger predicts a shining formula one career for German Formula 1 drivers Sebastian Vettel and Nico Rosberg.

Berger will lose the 21-year-old Vettel to senior team Red Bull in 2009.

But even though his Faenza based outfit must plot its future without Vettel, Berger is not short on praise for the German youngster.

"Quite simply, he is far above the level that he should be at for his level of experience," the 48-year-old told Sport Bild.

"There is nothing he cannot do even now. I am absolutely sure that Vettel will be world champion one day," Berger said.

Ferrari-powered Toro Rosso has potentially two race seats available at the end of this season, and Berger makes no secret that - given a free driver market - another German would be atop his wish list.

Referring to Williams' Nico Rosberg, Berger said: "At the moment we are not seeing his full value.

"The progress of Williams cannot keep up with the progress of Rosberg," he insisted. "He is ready for the next step."