Button: It's getting better all the time

Button had been on course for a fifth place finish at Sepang, but suffered grip problems in the late stages and lost out to Renault's Jarno Trulli and the Ferrari of Michael Schumacher. He feels that Interlagos will give him another opportunity to register more points for the Honda-powered squad.

"Although we secured two valuable points in Malaysia, I was of course disappointed to lose two more on the last lap to Jarno and Michael," said Button. "Brazil should be better for us though. We've had a really positive test in Barcelona and it was great to be able to put in plenty of laps - 108 on my first day there. All the signs are that our reliability is improving all the time and we have also worked towards improving the way we adapt to race conditions."

Geoffrey Willis, BAR's technical director, echoed Button's upbeat sentiment ahead of Brazil.

"We are pleased that we continue to demonstrate clear signs of our car's true potential and we go into Brazil feeling optimistic that we can build on our points-scoring performance in Malaysia two weeks ago," said Willis. "We enjoyed a very productive test in Barcelona in preparation for this race, which takes place at one of the most demanding circuits on the calendar and poses its own unique set of challenges.

"Although Interlagos is a medium-downforce track, it demands high aerodynamic efficiency and the right compromise between downforce and straight-line speed out of the last corner up the hill. Mechanical set-up is also critical here to help achieve the optimum level of traction for the infield section and to contend with this track's notoriously bumpy surface. As always, the weather conditions here can be very changeable which could make qualifying and the race very interesting."