Don't know if this has been posted before, a quick search found nothing related.
From the site
"Chain was Yesterday….Carbon drive belt is today!
It looks like that the belt technology breaks into the bicycle world. There have been many attempts to create a belt system which can replace a chain. They all failed! But now we see some of the big bicycle manufacturer using the belt drive…
The reference according belt drive systems comes from Gates. A company who owns a broad belt portfolio mainly for industrial applications."
Chain was Yesterday….Carbon drive belt is today! Hubstripping.com