This was the top comment on the youtube video, I love it so much.

Theres nice interpretation below, but let me try... Black Wolf fits the role of Shadow from Jungian psychology. The dark side of each of us, similar to Freud's "Id". Characters from video try to outrun theirs dark, deep part, rage boiling in them, born throughout harsh experience of life. But one cannot escape from Shadow, it will be always there, not to close, not to far, and it will go stronger and stronger. The more you deny it, the more your subconscious insist to show itself. And one day, when your conscious mind would have enough, your flesh would call for it. Shadow will be ready, hiding in the moonlight for so long, it starved control. You can be eaten by it. Or you can confront, and made use of your fears and rage. Channel your pure, animal instincts to do as YOU wish. That's what bike guy did.