PCW: So is the sequence geographically accurate from start to finish?

Carras: (Laughs) Not in the least. You couldn't actually follow a straight line from 8th Ave. to Harlem... but, hopefully that's sort of left out of the equation when you're watching it.

If you work out the mathematics of it, which we had to do inside our software to get it to work, it's essentially a zoom lens that goes from a 25mm to a 10-to-the-36th-power millimeter.

PCW: (Laughs) Those lenses aren't readily available.

Carras: (Laughs) Not in the real world, no.