The rivalry between Lewis Hamilton and Sebastian Vettel hit a fiery new level following the Canadian Grand Prix, with the latter finding himself in the headlines for his antics after the race. Vettel was hit with a five-second penalty after nearly forcing Hamilton into a wall and subsequently lost the race. It was fair to say he was a little unhappy and during the aftermath, he was seen swapping the ‘number 1’ sign that was placed in front of Hamilton’s car with the ‘number 2’ that was in front of his own. That incident got us looking back at some other controversial moments in F1 history: