Sebastian Vettel criticised the president of Italy's "ego" which he says led to a jumbo jet joining nine military aircraft in a fly-by just before the start of the Italian Grand Prix.
Passionate about the environment, the German has long campaigned for Formula 1 to become more sustainable. And the sport's bosses themselves have taken some steps, including a target for it to become net-zero by 2030.
As part of that sustainability strategy, fly-bys were, for the most part, axed at the start of this season. But some display teams were still given the green light to perform, such as the Red Arrows at the British Grand Prix and the Frecce Tricolori in Italy.
