F1 champion Button meets fans, signs copies of his book

London: Formula One World Champion Jensen Button met fans and signed copies of his new book in London on Thursday. Button is all set to drive alongside fellow-Englishman Lewis Hamilton for McLaren next year.

It is the first time in Formula 1 history that a team will start the new season with a line-up featuring the most recent successive World Champions.

"You never know what you will feel when you win a world championship if you are ever lucky enough to win one. And when I did win the world championship it was a very special feeling that you know I had achieved what I had set out to achieve in Formula One but immediately I thought so what happens now? You know where do I go from here?" said Button about leaving Brawn for McLaren.

" As a person I am always looking for new challenges - for me to go to McLaren, and have a teammate that's also won a world championship Lewis Hamilton, - it's a real challenge. I am going into a team that, you know he's got a team surrounding him, it's normal when a guy has done so well and I am leaving a team where I have been with for seven years, I've been very comfortable with that team and it is taking me out of my comfort zone but that's what excites me and that's what is a real challenge for me. And that is a challenge that I am definitely up for," said Button.

"Well I didn't think after the final race 'I am going to change teams', no. It was a lot longer after that but I knew that I had to look for something that kept me excited in Formula One and you can say well isn't winning a second world championship, you know, a big enough challenge? Well it is but I wanted something else and you know it was only a couple of weeks ago that I knew it was a possible option and it made me very excited and it definitely came from the heart that decision to move to McLaren to be fighting with Lewis Hamilton in the same car," he said.

"For me it is going to be a challenge. You know going to a team where Lewis has been for three years and he has won the world championship for that team. It's a real challenge for a driver but that's why I am doing it you know I want to challenge myself and I want to challenge myself and that is so exciting for me," he added.