Jenson Button has continued Brawn GP's dream start by recording the fastest time on day three of testing in Barcelona.
The Briton was the only man to go below the one minute twenty second mark in overcast conditions, with a fastest lap of 1:19.127.
Button completed 124 laps of the Circuit de Catalunya as Brawn GP continued their impressive testing run, with Button having finished fourth in testing on Monday and Rubens Barrichello coming in third yesterday.
Felipe Massa's Ferrari was second quickest, over one second behind Button, despite spending a spell on the side of the track after suffering a a hydraulic problem.
Robert Kubica was happy with his return to action with BMW, clocking in the third best time of 1:20.217.
"Today was very productive," said the Pole. "We tried various solutions we weren't able to complete last week in Jerez because of the unfortunate weather conditions. Obviously our main target today was to do a lot of evaluations for the forthcoming Australian Grand Prix."
Toyota's Timo Glock in fourth place was hot on the heels of the BMW man, after a productive day of testing.
"This morning started well and we made it through a lot of set-up and comparisons in the course of the day. We found some different directions and overall it was a productive session," explained the German.
"Late on we had a slightly longer break so we couldn't quite finish our plan. But we should have enough data to investigate and make some positive steps for tomorrow."
Renault's former world champion Fernando Alonso completed the top-five, and he believes McLaren's struggle is a sign of things to come.
"I think it's not any more just Ferrari-McLaren domination," Alonso said. "This year the fight will be very difficult."
One driver who did not have an enjoyable day at the track was World Champion Lewis Hamilton, with the Briton propping up the time charts. Hamilton was two and a half seconds off the pace in a frustrating day that included a trip to the gravel trap.
"I don't know if they have a problem or not and what they are doing. Let's wait a few weeks and we will know where they are in the first race," said Raikkonen.
"They haven't probably been as quick as in the past winter but that doesn't mean that they won't be fast in the first race."
01. J. Button Brawn GP 1:19.127 124 laps
02. F. Massa Ferrari 1:20.168 109 laps
03. R. Kubica BMW 1:20.217 109 laps
04. T. Glock Toyota 1:20.410 99 laps
05. F. Alonso Renault 1:20.863 107 laps
06. S Vettel Red Bull 1:21.165 102 laps
07. N. Rosberg Williams 1:21.324 89 laps
08. G. Fisichella 1:21.545 97 laps
09. S. Buemi Toro Rosso 1:21.569 140 laps
10. L. Hamilton McLaren 1:21.657 82 laps
Source : Planet F1