Highlights and reaction from this week's first pre-season Formula 1 test at Valencia.

New Sauber driver Pedro De La Rosa says it is a fantastic feeling to be back racing in Formula 1 after he posts some of the fastest lap times during the opening winter testing session in Valencia.

Defending Formula 1 champion and new McLaren driver Jenson Button tells BBC Sport he found winter testing in his new car to be "frustrating but useful".

Formula 1 legend Michael Schumacher says his return to the track with the Mercedes team was a lot easier than he expected it to be, after taking part in winter testing in Valencia.

Mercedes GP team principal Ross Brawn admits the team still have plenty of work to do following testing in Spain which saw rivals Ferrari post faster times on the Valencia track. (UK only)

Virgin Racing designer Nick Wirth and drivers Timo Glock and Lucas di Grassi unveil the VR-01, the first ever F1 car designed, built and tested entirely on computer.

After completing his first day of testing the McLaren MP4-25 in Valencia Lewis Hamilton declares himself happy with the new car.

Scotland's Paul di Resta says he has fulfilled a lifelong dream by joining Force India as their test and reserve driver for the 2010 F1 season.

Felipe Massa is pleased with the performance of his Ferrari after finishing fastest at Tuesday's pre-season testing on Valencia's Ricardo Tormo track. (UK users only)

Renault's Robert Kubica does not believe any one team stood out at the pre-season testing on Valencia's Ricardo Tormo track, but will be using February to improve his car. (UK users only)