Forza Motorsport/WMG

The player in Forza 3 is the Prince of Persia.
Having saved his kingdom, the Prince has decided to try his hand at racing. He wisely brought the Sands of Time with him in his car.
 * That does sound like something a stereotypical wealthy Arab/Persian prince would do.

The Hired Driver is the Stig.
He will never spin out, almost always gets in first place (provided Rossi doesn't block him), and he is not affected by the "Pressure" system like the other AI cars - AI cars riding on his ass will not cause him to become nervous. He also wears a white racing suit, like the Stig.