After all the posturing by Bernie Ecclestone in his battles with the BRDC down the decades, there is a possibility that the British Grand Prix will be lost from the calendar on Liberty Media's watch. Nobody wants that to happen, but it remains a possible scenario.
This will be a critical year for Formula 1's management as it fights battles on several fronts and the clock runs down towards 2021 and a new era for the championship.
Along with its interactions with the teams and the painful progress being made towards a new Concorde Agreement, the calendar is the biggest challenge Liberty faces. And, by a coincidence of timing, the contracts of several races - including those at Silverstone, Monza, Barcelona, Mexico City and Hockenheim - expire in 2019.