I notice now that the site says a 5.2m (17ft) tunnel is under development in Berlin, and it even has an artist's impression.
Anyone know anything about that one? And the one in Italy, due to open Autumn 2014 - is that still up to date?
It's been a year since I started this topic, and now they have:
1 in progress, opening autumn 2014;
1 under development with an artist's impression; and
6 in progress.
So they've added to more to their plan since last year.