I am torn about these kind of things.
One part of me thinks cool, science rocks. But one part of me is very skeptical about all the new body improvement products that develops. If we in the future can grow our hair long with all kinds of machines, I think it looses some of its charm. I like the fact that you need some commitment and patience to grow your hair long. That is what separate us from the people that just get extensions.. But of course it is still interesting to see and I shouldnt knock it completely. Heck, maybe I will be wearing the freakin´ thing in 30 years