FIRST PICS: Williams FW28 roll-out.

WilliamsF1 rolled out their 2006 race car - the FW28, for its inaugural laps Monday at Valencia prior to the start of testing 'proper' on Tuesday.

With Nico Rosberg behind the wheel, the team recorded 43 trouble free laps despite the poor, wet weather.

"Today was spent completing filming work with the FW28 before the proper testing begins tomorrow," confirmed WilliamsF1's technical director, Sam Michael.

"It was cold and damp in the morning and then rain settled in for the afternoon. Even so, we managed to complete a few systems checks on the FW28 with no problems at all. Tomorrow Mark [Webber] will drive the FW28 and Nico will drive the FW27C interim car, both with V8 engines."

Williams will start testing the new car in earnest on Tuesday, with the programme running until Friday February 3 at the Spanish circuit.

Pictures courtesy of Williams.