Want a chance to win Nico Rosberg's signed Silverstone pass?

A reigning F1 World Champion needs a pass to enter Grand Prix racing's paddock sanctuary, and Nico Rosberg is no exception.

Actually, world champs are awarded an 'all areas'  permanent pass by Formula 1 but Rosberg had simply forgotten his when he showed up at Silverstone two weeks ago!

The German posted the signed give-away on Twitter, telling fans to head over to Instagram for a chance to win the precious piece of memorabilia. But there's a catch...