Son of 1982 World Champion Keke, Nico Rosberg moves up to Formula One after a dominant season in the new GP2 championship in which he took the title with ART Grand Prix. In April 2005 BMW Williams announced that Rosberg would become the team's second official test driver and after impressing all concerned the team confirmed that he will race alongside Mark Webber in 2006.

Rosberg's rise to Formula One saw the German take the traditional karting route starting in 1996 when he became the Regional Côte d'Azur mini-kart Champion. French and North American championships followed in 1997 and 1998 and Rosberg would finish fourth in the Junior European Karting Championship in 1999. He took the runner-up position in the Formula A European Karting Championship in 2000 and the Super A World Karting Championship title the following season. A move to single-seaters in 2002 saw Rosberg become the Formula BMW ADAC Champion before moving to the F3 Euro series and taking four wins over the next two years.

Joining ART Grand prix in the new GP2 category in 2005, Rosberg enjoyed a season long battle against rival Heikki Kovalainen, eventually taking the title whilst also testing on a regular basis for Williams. Fluent in English, Italian, French and German, Rosberg is an exciting prospect for Williams next season.