Lewis Hamilton stunned Formula One on Sunday when, hours after winning the Emilia Romagna Grand Prix, he admitted that he did not know if he would still be in the sport next season.

Hamilton's victory, a record-extending 93rd of his career, in Sunday's race clinched Mercedes' record seventh consecutive constructors title -- an achievement he attributed to the team's "unsung heroes" and the leadership of team boss Toto Wolff.

When Hamilton was asked if Wolff's likely departure from his current position next year would have any bearing on his own decision, he said: "I don't even know if I'm going to be here next year so it's not a concern for me at the moment." "I would like to be here next year, but there's no guarantee of that for sure. There's a lot that excites me of the 'after-life' so time will tell."