Webber may quit Formula One in 2011

Webber, who currently leads the drivers' standings, has a contract with the Red Bull team until the end of 2011. But the Australian told Brazil's weekly Esporte Espetacular programme that he could not guarantee he would be on the grid beyond then.

"I cannot guarantee that my head will be in the same place in 2012," said Webber. "For sure I want to go for the championship. I know that it changes people's lives, changes the person and I want to know how it feels."

Webber added that there is more to life than Formula One, and that he would also like to be a mentor to young people.

"I want them to realise that they can dream higher and achieve," he said. "Maybe I will do a little mountain climbing, who knows. Definitely I will do some more sporting challenges before I get too old and return to Australia to drink red wine."