I just found this video of a guy using the Cox ISP network (I think thats either in the US or Canada) using a DOCSIS 3.1 connection.
It looks like a pretty good connection.
This is 2 years old. But its the first video I've seen of a working DOCSIS 3.1 connection. If anyone knows of any other videos I think they would be interesting to watch.
[youtube]https://www.youtube.com/watch?v=gpTPJx5e8Y0[/youtube]
Cox new gigablast DOCSIS 3.1 service