Video overview

All the focus was on Penske for Saturday at Long Beach. Australia's Will Power took pole position as Brazilian Helio Castroneves made a welcome return to the IndyCar Series

The McLaren team showed a considerable improvement in performance on Friday in China, following the installation of a new front wing and modifications to their rear diffuser.

After an unexpected start to the 2009 season, this weekend sees F1 make an early return to China. With the double-diffusers confirmed as legal by the FIA, can anybody catch Brawn GP and Jenson Button? GPUpdate.net takes you for a guided tour of the Shanghai circuit.

Tuesday 14 April will see the Brawn, Williams and Toyota teams visit the FIA's International Court of Appeal in Paris to discuss their ever-radical and controversial diffusers; but why are so many teams upset with the designs of these three cars?

Robert Doornbos has won the first of the Algarve's races for Team Netherlands, in a race which saw Liuzzi take pole on his first A1GP weekend.

Ryan Briscoe has won the first race of the 2009 IndyCar season. The Penske driver snatched the lead from Justin Wilson in the final stages of the race and held on to victory.