Ferrari chairman Sergio Marchionne has issued a reminder of what's at stake in Formula One's discussions over the long-term future of the sport.
Ferrari threatened to walk away from F1 in 2020 when it saw the first blueprint for the set of engine regulations, tabled last October. Negotiations between F1 owners Liberty Media and the 10 teams which make up the grid have continued since, with a set of proposals being presented ahead of the Bahrain Grand Prix earlier this month.
Team boss Maurizio Arrivabene was tight-lipped about Ferrari's reaction to the proposal, which was broadly outlined to the public in a five-point plan.