If you're interested, there is an EPIC thread somewhere in which a member named Cigtech posts about his experience on one of these bikes. Basically, he rode it at 30 MPH for 75 miles per day, and it was awesome, or something like that.
EDIT:
Here's the link
http://www.bikeforums.net/showthread.php?t=237231
this thing kind of got out of hand, but maybe someone else's experience may be of interest.
I've read and re-read that thread, and I've finally come to the conclusion that the CigTech Denali thread is the absolute best troll I have ever seen on any message board. Absolutely masterful. He had admirers, defenders, detractors, haters, and people who just thought the whole thing was funny. He kept it going for *months*. And he left little bread crumbs that would clue you in to the fact that the whole thing was a joke, but you had to pay attention. The best part was that he'd say something totally nuts, people would start to think it was fake, but he'd defend all the crazy stuff very matter-of-factly that made you believe the guy.
Sorry to go way off-topic, but reading that entire thread is a very good way to spend half an hour. Just don't drink any coffee unless you want it on your monitor.