Sebastian Vettel dropped the biggest hint yet that he might quit Formula 1 as he admitted he has to be "realistic" about his future.
The four-time world champion is one of the most experienced racers among the current crop, and has spent much of his time in the sport fighting for race wins and world championships. But that has not been the case for the last couple of years, and fans are more used to seeing him struggle for the small points than competing towards the front.
While the German must take some of the responsibility, the simple truth is he has one arm tied behind his back by a poor Aston Martin car. Now in his second season with the team, other than a handful of races, he is yet to be given a car capable of matching his ambition.
