So when I first saw this I looked at the first shot of the oner and thought, can't be a drone its to locked in on the subject exiting the truck. If it was a drone maybe they shot in 4k and down converted to a lower res to help reframe and hold the action with a more "locked in" feeling. But then I saw that it was in 4k so that theory probably incorrect, even if you shot in 8k I'm not sure this technique would work with such precision. The zooming to long focal length without a floating feeling is also indication that this is not a drone. Cable cam? you can key out the wire so you wouldn't see it but you would need massive towers to support the ends.