With nearly five million views on YouTube, we’re willing to wager that you’ve probably seen Semenuk’s unReal segment, maybe even more than once. The now infamous four minutes marks the first time that an entire film segment was made up of only one take from start to finish, with Semenuk riding a custom built track to the tune of “For What It’s Worth” by Buffalo Springfield. This unprecedented achievement wasn’t an easy one though, and in the end the final take that made it into unReal was the only time Semenuk actually rode the track from start to finish.

Red Bull’s “Ultimate Rush” episode takes a closer look into what went into making the one-shot segment, as well as how close it came to never coming to full fruition.