Psychologically speaking, it's very important to be in good shape. I work in a sport that requires you to react quickly and be in excellent shape. Besides, things don't get easier as you get older.

I have to say it's been tough to leave the Ferrari family, which has been a big part of my career.

Sometimes minor details can have a huge impact. If you don't devote 100 percent of your efforts to every detail, you immediately run into difficulties.

When you are part of a community for 14 years, it inevitably shapes you. I will always have a part of Ferrari beside me; a part of my heart will always be red.

With this type of thing there are always different opinions and mine is that it is impossible to blame either one of us. [on a crash with Heidfeld]

I decided on a vision. I think I maybe join Toyota at the midpoint of a project, whose long-term goal is winning world championships. Also I have my big ambition, the drivers' world championship. That is not abandoned - entirely the opposite. I am young enough and motivated enough to make a new start in order to reach this goal.

I have been a huge fan of America, as I find their way of life there is pretty unique, and I have enjoyed a lot of good times over there.