While all eyes were on the McLaren 2015 car launch, the Mercedes F1 team quietly sneaked into Silverstone for a shakedown for their 2015 car, the W06.
In very cold conditions both Lewis Hamilton and Nico Rosberg got to lap the Northhamptonshire circuit clocking up a total of 18 laps. The session, classified as a promotional event under FIA rules, was brought to a premature end after a blizzard moved in.
The team have been releasing teaser videos and pictures on their twitter feed for the past few days. The official unveiling of the car will take place in the Jerez pit lane on the morning of the first day of testing.
Pictures courtesy Mercedes AMG Petronas Formula 1 Team