"Any film about speed, just trying to capture what it looks like on screen is a challenge. Especially in a car race, as multiple cars are going 200mph, but when you put a camera alongside them, things actually slow down. You have to have relative things going by, and there are lots of tricks you have to learn to create that sensation of speed. And then, on top of that, there's a snail hopping around, and the scale issues that come out of that. That was very complex to figure out, but it's probably what makes the film."