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Story below, from SkySports
Williams driver Alex Wurz has confirmed his immediate retirement from Formula One, with the Austrian driver missing the season-closing Brazilian Grand Prix next weekend.
The announcement brings to a close a decade-long career, the 33-year-old having made his debut for the Benetton team at the 1997 Canadian Grand Prix.
Wurz finished third in only his third race, that year's British Grand Prix, and went on to make a total of 69 grand prix starts.
Although he raced for Benetton until 2000, he only returned to a full-time race seat at the start of this season, when Williams offered him a place alongside Nico Rosberg.
Skills
The intervening period saw Wurz emerge instead as a highly-rated test and development driver, with his skills being used by McLaren-Mercedes - for whom he also finished third at the 2005 San Marino Grand Prix - before transferring to Williams in 2006.
Explaining his decision, Wurz said: "In such a hard fought environment as Formula One, I have always maintained that if you have a moment's doubt about what you are doing, then it is time to stop.
"Privately I began to have these thoughts earlier this year and so have decided that now is the time to make my announcement."
Although Wurz's performances this season have generally been shaded by those of the up-and-coming Rosberg, he did nevertheless score Williams best result of the season so far - a third place at the Canadian GP.
Tribute
Team boss Sir Frank Williams paid tribute, saying: "Alex has made an invaluable contribution to the team for the past two years, first as one of the best test and development drivers the team has ever worked with, and more recently as a race driver.
"This season Alex has had some very strong drives in difficult circumstances and we would like to thank him for all he has contributed.
"Alex is well known, immensely popular and widely regarded as one of Formula One's gentlemen."
Wurz also expressed his desire to remain in Formula One in some capacity, and refused to rule out racing again in another category.
Meanwhile, Williams said they would announce Wurz's replacement for Interlagos on Tuesday.