F1 legend Alain Prost is not worried another driver could equal or surpass his tally of four world championship's after Sebastian Vettel moved 21 points clear at the Monaco Grand Prix.
Prost is third in the all time championships list behind Michael Schumacher (seven) and Juan Manuel Fangio (five). Currently Prost is the only man with four championships but Vettel will join him with another title this year.
He told Germany's Welt newspaper. "I've always told myself -- change the things you can change.
"And don't worry about those over which you have no control. What should I do about it?"
"He will probably surpass me one day.
"When I lost my record for the most grand prix wins to Michael Schumacher, that was something else," the 58-year-old admitted.
"I was not happy about it. If you're at the top, you want to stay there.
"But now, if I am the second, third or fourth most successful driver in formula one history, nothing changes," added Prost.
Prost is full of praise for the 25-year-old German and believes there are no "serious" weaknesses in Vettel.
"In recent years, it was always said that he can only win races from the front," he said. "Well, he has refuted that in the past season.
"I spoke with him last summer, when Fernando Alonso was far in front of him. I said 'Can you do it?' and he answered 'Yes, clearly'.
"It takes this sort of conviction to be a great driver," added Prost.
One thing that Prost did point to however, is Vettel's frosty relationship with team-mate Mark Webber pointing to his own experiences with Ayrton Senna and Nigel Mansell.
"That can happen, yes. I lost the title in 1990 because of Nigel Mansell.
"It can happen very quickly."
Speculation in the F1 paddock is linking Vettel's good friend Kimi Raikkonen to the second seat at Red Bull next season, however Prost believes friendships go out the window when fighting for championships.
"But when you are fighting for the title with his teammate, is he your friend? My experience is quite the opposite."
Finally Prost spoke about the changes coming to the tyres for the Canadian Grand Prix.
"There are three possibilities," he said. "First, there is a safety problem, then this decision is absolutely correct.
"Secondly, in future there will be two or three pit stops instead of four, which I also think would be good because the races have become very confusing.
"But third, if it (the changes) is due to the influence of external forces, that would be a disaster," said Prost.
"I don't know which is true, but two of the three alternatives are positive, so I think that's a passable statistic," he laughed.
And Prost believed concerns teams like Red Bull and Mercedes, who have had problems with the tyres this year, will not gain too much of an advantage over their rivals Ferrari and Lotus, who have faired a lot better with the 2013 rubber.
"But I believe that this change will not change so much. Lotus and Ferrari will not lose the advantage that they have."
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