Doornbos splits with manager

Red Bull Racing test driver Robert Doornbos will not continue to work with his manager Marco Zecchi. Zecchi was Doornbos' manager since 2003 when the Dutchman was racing in the F3000 series. The duo ended their contract this month. Doornbos has ended his contract with Zecchi as he wants to race in the American ChampCar series this season.