Mercedes completed a private test of its new W03 at Barcelona today, ahead of the next full-field test at the track, which starts on Tuesday.
Because Mercedes only used three of the four days of the opening test at Jerez, it was able to complete 200 kilometres of private running today. Michael Schumacher drove in the morning, before Nico Rosberg took over for the afternoon.
Mercedes used its 2011 car at Jerez earlier this month, focusing on getting data about this season's Pirelli tyre specifications before rolling out the new car this week.
The W03 will be officially unveiled just before the start of testing on Tuesday morning.