Super Aguri insists it has a valid contract with Giedo van der Garde to be its test driver.

Williams believe they can bounce back in 2007 after admitting to a "terrible" time last year.

Williams confirms Nelson arrival

Alex Wurz is relishing the chance to race again after six years on the testing bench.

Williams unveils the FW29

Super Aguri issues regarding van der Garde

On Thursday evening the Spyker F1 team announced that Giedo van der Garde will be the team's test and Friday driver. The announcement came as a surprise as Van der Garde was in Valencia this week as Super Aguri's test driver.

Nico believes experience gained in debut season will help him improve in year two.

Tech boss Sam Michael highlights FW29's improved aero efficiency and cooling.

At their launch of the FW29 Williams announced their latest new major sponsor; Lenovo. Lenovo is a computer technology Lenovo Group's acquisition of the IBM Personal Computing Division in May 2005. Lenovo develops, manufactures and markets cutting-edge, reliable, high-quality PC products and value-added professional services that provide customers around the world with smarter ways to be productive and competitive.

Sir Frank says Williams has "redoubled its efforts" for 2007 after its torrid '06 season.

Toyota-powered challenger must restore the squad's credibility after disappointing '06.