We've already discussed this a little bit in another thread, but I think it certainly deserves it's own topic.
Just to clarify, this is a leak - not the finished article. The audio is an edited version of Rusty Nail from the Last Live which the director has obviously been using as a demo to construct the video around, with the thought of adding the finished re-recorded version when it's ready.
Also, having seen the script of the video - which was also leaked a month or so ago, large sections of the narrative are missing (such as Heath arriving on a motorcycle to pick up Toshi out of a traffic jam, Toshi getting road-rage, Pata's solo scenes), although it's possible that these have been cut.
