Ross Brawn has admitted he doesn't know if he will remain as Mercedes Team Principal after 2013.
Asked if he will continue his position at Mercedes by German newspaper Frankfurter Allgemeine Zeitung, he replied: "I hope so".
Last weekend's race at Silverstone was the first attended by Mercedes' latest technical acquisition Paddy Lowe in full team uniform, and Lowe is the man many believe will eventually replace Brawn.
Brawn admitted: "One day my career will be finished, but I will not stop until we are at the top. "That will be the day when I can give less than I am now to the team.
"Paddy Lowe has started work earlier than expected, and first he needs to be integrated, but he will take over a lot of the responsibility and, if possible, then my role will change."
Lowe is one of five highly respected engineers currently working at Mercedes, Brawn was formerly Ferrari technical chief with Michael Schumacher, Aldo Costa is another former Ferrari man, while Geoff Willis was at Honda and Bob Bell.
"I think we have enough," Brawn said. "Actually it's perfect, as every one of us has an unique task.
"At the moment, Bob is taking care of this year's car, Aldo is managing the 2014 car, and Geoff is thinking about what is important in 2015.
"We are very well positioned," he added, failing to mention Lowe's current responsibilities.
Some believe however Lowe is simply waiting in the wings to replace Brawn at the end of this year.
"I have never feared for my job," Brawn insists. "It has never factored in my thinking.
"I've always done what I felt was right. If that doesn't suit the ideas of other people, then that's too bad, but I'm not going to change for them. "I have always been aware that life in formula one is like a rollercoaster ride."
Meanwhile McLaren team boss Martin Whitmarsh has revealed Matt Morris, who left his post at Sauber this week, will be joining the design team at the Woking based team.
"Matt is coming to head our engineering drawing office. It is probably something for Sauber to announce but I am not going to deny it," Whitmarsh told Sky.
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