It was not until I started racing for car manufacturers that I found a car I could really get attached to. I am the son of a car dealer, so up until then, cars just came and went.

To be a racing driver it's essential you have very good eyesight, and that's especially relevant at night. Your senses are heightened, you're travelling over 200mph, you need to focus on that 110-metre braking point and you have to have absolute faith and commitment in your driving.

My very first car was a grey Alfa Romeo Alfasud, which I got in 1987. But, in our family, all cars were for sale - so they might be there in the morning and were gone at night. In the mid-90s, I joined Porsche and the Carrera was the car, and the Carrera 4S was the one they gave me. As a wee boy from Dumfries, I couldn't believe it.

I try to get away from the pits as quickly as I can. I speak to my engineer when I get out of the car, usually there's some press to do, then I will go off and have a shower and get my dry, clean overalls and clothing on. I'll have a massage, stretch and something to eat. I don't sleep, but I try to close my eyes for a while.

I clipped a Ferrari, hit the gravel trap at a fair old speed, which lifted the car up into the barrier, and then rolled a few times. I had no injuries or anything - I just had to wait for the marshals to right the car before I could get out.

What I like is when you can hear the heart and soul of music and can feel the energy coming out of it, because that's what it's like when you drive.

I get moments where you slide and there's an adrenaline shoot, but the moment you scare yourself is the moment you give up. I think what probably scares me more, is that you're involved in something that is quite surreal and you have to be able to bring yourself back down to earth and that's where when you come home and your kids are just excited to have daddy home and tell you about their day, that's one of the greatest things to bring you back down to earth.