Watch Cool Video of “Empty America” Where You See San Francisco Time Lapse Without People [VIDEO]

This is a pretty cool video I stumbled upon.  Imagine seeing a major city with time lapse, but without people.  It's a project that a group of people have been working on, and they started with San Francisco   It's a little creepy and weird to see the city empty and only the sky, weather, and sun moving.  And talk about a pain staking process to make this!

Want to see how they did it?