F1 facing uncertain future at the Nürburgring

This weekend the German Grand Prix will be held at the Nürburgring. Reigning Formula One champion Sebastian Vettel grew up not too far away from the Ring and he will be a huge drawcard. Indeed organisers are expecting record crowds. But will this be enough to ensure the Nürburgring maintains its position on the F1 calendar?

[Source: YouTube]