Skier's iPhone video experiment produces spectacular results...without a drone

At this point in time, one of the Holy Grails of action videography is the ability to have a drone follow a subject like a skier or bicyclist while panning around the subject. Skier Nicolas Vuignier spent almost two years coming up with his own method of getting those follow-along action videos without using a drone -- in fact, he just used an iPhone 6 and what appears to be a handmade rig that lets him whip the phone around his head while using centrifugal force to keep the camera pointed at him. Using slo-mo, the affect is dreamlike:

In his notes on YouTube, Vuignier says that "no iPhones were harmed during the making of this video" and that he's working on a "making of" video that should be out soon.