I don't think Hyperloop is going to result in anything particularly useful. It seems to have a lot of fundamental problems. I'm sure it's no coincidence that Elon Musk tossed the idea out with minimal support rather than having one of his companies build it, or founding a new one.

However, it seems a bit premature to say that it's too much saying and not enough doing. It's only been out there for about three years. There have been scale-model pods built, and test tracks are under construction. If anything, progress seems remarkably fast for such a radical machine.