Red Bull Racing, one of the most decorated teams of the last few Formula One seasons, is in danger of not even being on the grid next year. Earlier this year, Red Bull got out of their contract with Renault as an engine supplier, something they desperately needed to do.
This happened as VW was being courted to purchase the team, which almost came to fruition. But that was abruptly canceled as VW's diesel scandal sent the company into turmoil and put that purchase on an indefinite hold. Then the rumors of Red Bull leaving F1 started.
Now Red Bull's designer and F1 legend Adrian Newey is saying that as they won't step in to supply engines. Mercedes flat out said no and it's believed the offer of running 2015-spec Ferrari engines in 2016 was met with an immediate no from Red Bull management.
If F1 loses Red Bull, it shows that the issues with the series aren't just at the tail end of the grid, but that they can happen right up front too.