I'm predicting that no one will ever see a preview of that movie unless its on their website. This movie isn't going to have a box office. The only big screen documentaries that ever get any kind of play are ones that have a budget. This doesn't. At most this will get shown one night in theaters you don't know exist.

And what the hell is up with the random extremely lame scenes interlaced within the trailer?

PS, I'm not saying it won't be interesting, just saying that I think it's going to be extremely obscure.