Mercedes boss Toto Wolff says interrupting George Russell with an excitable radio message about winning F1's Austrian Grand Prix was the "single dumbest" thing he has done at the team.
As it became clear that the late-race collision between Lando Norris and Max Verstappen had put them both out of contention for victory as they struggled back to the pits, Wolff hastily jumped on the radio to offer some encouragement to Russell.
