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Mercedes Formula One driver Nico Rosberg laid down the unoffical fast lap on the opening day of testing on the Circuit de Catalunya in Barcelona, Spain. Second went to Lotus F1's Kimi Raikkonen.

Mercedes driver Nico Rosberg admits the Ferrari did not look good at the Jerez test but it was "quite good" he said.

Ross Brawn: We will probably only be able to say in Australia and Malaysia.

Lewis Hamilton made the switch to Mercedes, and already is giving his opinion of his new teammate: Nico Rosberg. The 2008 world champion said, "Nico is a damn strong competitor."

First time that the Scuderia Ferrari works team has been on top of the timesheets on the Jerez de la Frontera circuit.

Briton Hamilton and his Mercedes AGM F1 W04 sped over the gravel at the end of the back straight, hitting the tyre wall head-on.

Mercedes' chief executive, Nick Fry was present at the launch of the W04 as speculation continues on when and if Mercedes will sign Paddy Lowe.

The aerodynamic design philosophy has been optimized, but the new Mercedes F1 car retains pushrod front suspension and a pullrod rear suspension.

Prior to the official launch, Nico Rosberg took the new Silver car out on track for a shakedown. The official unveiling was done by the German and his new teammate, Lewis Hamilton.

First glimpse of Mercedes' new W04.

Sergio Perez also says that Sebastian Vettel is the more complete driver.

The new Ferrari-powered single seater will run for the first time at Jerez on February 5.

According to the seven times world champion, Mercedes did not have the needed funds during his tenure with the team. Michael Schumacher: "It's a factor."

Lauda confirmed that Christmas will not be a period for quiet reflection.