Sunday 2nd of August (my birthday) will see the ending of the Public Express between Groningen, Oldenburg and Bremen. PE blaims it on cheap railtickets, but there are now also other buscompanies present here. 1 bus takes you from Groningen to Muenchen (Munich). Departing at around 15.30 and you arrive at 8 in Bavaria. It is seems to be only on Friday.