I've heard of these for some time, and even seen a few photos, and here's a video to top it off. I'd love to ride one and see how it feels. I imagine it would be a very comfortable ride.
If you're skeptical, it might help to remember that carbon fiber is essentially fabric to begin with.
Here's the link to the article in the Huffington Post.
What are your thoughts on bamboo bicycles?
Would you spend 500$ on one?