My country has been wracked with violence for a long time. Just to see all the violence on the news makes you sick. It's true that violence is in our nature, but I try to explore deeply where it comes from and where it goes and what it creates. Not in a moralistic or preachy way, but just to observe the real consequences of violence in a human being or in a society.

I saw what I could [in Mexico City], but we rarely got anything other than big, mainstream American films.

I respect BMW for not interfering in these projects. They're just trying to support short films with their brand, which I think is great.

One of the reasons why I agreed to do commercials is that they gave me complete freedom. I just had to have the car in it and write a story around it. I wanted to do something serious set in a Latin American country, but again, it was an exercise in style for me.

I was aware of the possible biases you could get as a commercial director, like being too concerned about the technical aspects of the form rather than anything of substance. If you keep working in commercials, you can get trapped in a very superficial way of thinking. I always used commercials as an exercise for filmmaking, like going to the gym.

You hear about bombings in other countries, or numbers like "10,000 people died" - you hear that number and you think, "Well, I saw that yesterday in a film, and that didn't look so bad." Younger viewers, in particular, lose perspective on reality.

All people know that they will die, but they don't actually believe it.