Weirdly enough, I live in London - was born there and have lived there all my life - but I hadn't made a film in London for a long time. I hadn't found the right subject. I liked going away, to some far flung place.
I never know going in if I've even got a movie to make. Once you start making a film, you hope there's going to be enough material! My job as a director is always to push for more.
My family didn't film anything. But then you look deeper and realize, maybe there are photographs, there are things. It's also context: You give something a context, and suddenly it becomes really deep or meaningful footage.
The Tour de France would make a great movie. Drugs, corruption, political chicanery, guys risking their lives - everything you need for a great sports drama.
I wanted to make a film that wouldn't just appeal to Formula One fans. That's what the great sports documentaries do - 'Hoop Dreams,' 'When We Were Kings' - they're human dramas first, sport second, if at all.
A big part of my filmmaking is that I can go somewhere new and, visually, be excited by it.
I'm a sport fan. So, I have always watched everything, and I used to watch racing. Formula One was always on. The genius about it is that it's on at lunchtime on a Sunday.
Why make a movie about Ayrton Senna? Someone who drove around in circles at 200mph in a car that looked like a giant cigarette packet? Why would anyone who isn't already a fan of Formula 1 care?
My team and I used the actual footage to create a three-act story of the life of Ayrton Senna. There are no talking heads and no voiceover. Senna narrates his own epic, dramatic, thrilling journey.