I have never won a race, and that is my main disappointment - but you have to be positive.

You never really know how quick you are before you reach F1.

You tend to think that there is a big gap between F1 and everything else. F1 is where all the fantastic drivers are, so you just don't know how good you are until you get there.

When you drive a car, either you manage it and feel it with the grip of the car, or, like me, you fix it on visual speed. If you do it through the grip, you lose it very quickly - because when the track changes, you can have scares. I do it visually, so if I am going too fast I fight to get the car back, but I do not do it by feeling the grip.

I decided to do the maximum to hold onto the lead for as long as possible. That is why I pushed so hard from the beginning. I was at 100 percent concentration.

I am not close to retirement. I still have a lot more that I can achieve. There are younger guys coming into F1, but I am not old and I'm not finished.