The video was shot by a single Steadicam, but it took more than 60 takes, over the course of two days, to get it right.You can read about the making of the video here: Wired/CNN: The making of OK Go's new viral video
Many of those takes lasted about 30 seconds, Sadowsky said, getting no further than the spot in the video where the car tire rolls down a ramp.
"The most fiddly stuff, you always want to put that at the front, because you don't want to be resetting the whole thing."
There's four short "making-of" videos: episode 1, episode 2, episode 3, episode 4, which primarily talks about the inspiration for the project and shows a little of the building (but none of the practicing!)
And you can watch the actual video.
Here's part 1 of the Making-of-series.