On the first day of testing at Jerez, just Williams and Red Bull were seen on the track.
David Coulthard topped the timesheets with a fastest time of 1:20.641, with his team-mate Webber just two tenths of a second behind him.
Kazuki Nakajima came third in the new Williams FW30 both Williams cars sported a new livery which celebrates 30 years of Williams in Formula One. Nico Rosberg was the slowest of the four drivers in action, although he was only four tenths of a second down on Coulthard s time.
Ferrari and Toyota are expected to test at Jerez from Tuesday onwards.
Unofficial Times for Day 1 of Testing at Jerez (12/02/08)
Pos Driver Team Time Laps 1. Coulthard Red Bull-Renault 1:20.641 91 2. Webber Red Bull-Renault 1:20.807 112 3. Nakajima Williams-Toyota 1:20.834 102 4. Rosberg Williams-Toyota 1:21.096 69