Dec.18 (GMM/ Marussia on Tuesday finally admitted one of F1’s worst-kept secrets, by announcing Max Chilton will make his grand prix debut in 2013.

The 21-year-old Briton replaces the Caterham-bound Charles Pic.

Chilton, whose father Grahame reportedly has a personal fortune in the region of $150 million, will be Timo Glock’s fourth different rookie teammate since 2010.