On the final day of testing at Barcelona, Mark Webber topped the timesheet in his Red Bull RB4.
Red Bull have not shown much form in previous tests and the final day gave a small glimmer of the potential the car has. It was the first time that the car had run with a high engine cover fin and it has proved a successful modification.
Heikki Kovalainen was just four hundredths of a second behind Webber, squeezing his team-mate Hamilton out by three hundredths of a second the McLaren pair look evenly matched and it should prove an interesting season for the young drivers.
Robert Kubica was just behind the two McLarens, showing that the BMW team have definitely overcome the balance issues that marred their first tests BMW look quick enough to challenge the top two teams in the coming season.
Nick Heidfeld was the only driver to bring out a red flag when he span his car early in the morning session.
Once again Honda disappointed with Barrichello finishing in 11th, and Button finishing last behind the Force India of Sutil.
Unofficial Times for Day 3 of testing at Barcelona
Pos Driver Team Time Laps 1. Webber Red Bull-Renault 1:22.385 65 2. Kovalainen McLaren-Mercedes 1:22.422 67 3. Hamilton McLaren-Mercedes 1:22.459 92 4. Kubica BMW-Sauber 1:22.492 83 5. Alonso Renault 1:22.509 63 6. Heidfeld BMW-Sauber 1:22.874 79 7. Bourdais Toro Rosso-Ferrari 1:22.887 80 8. Coulthard Red Bull-Renault 1:23.889 81 9. Piquet Renault 1:23.039 64 10. Vettel Toro Rosso-Ferrari 1:23.232 74 11. Barrichello Honda 1:23.795 84 12. Sutil Force India-Ferrari 1:23.800 86 13. Button Honda 1:23.808 85