Think I might be going to this.
Tentatively looking into details.
Have very good friends who live quite close by in Herbrechtingen which is about 50 km away to the South West.
I last stayed with them when I bought my Klein (seller wouldn't post). Flew in to Stuttgart and had a nice train ride down to stay with them for the weekend.
They are keen cyclists too so should be a nice day out if they are up for it.
Will get lots of pics etc if it works out and post them up...