Is it possible that maybe they make them drive from Interlaken to Salzburg.
I did some driving directions on the European version of Mapquest, the trip takes 5 hr 40 minutes, Interlaken to Salsburg. The routing takes them across the Rhine River from Vaduz, Liechtenstein, btw. If in fact that they do drive from Interlaken to Salzburg and do tasks in Germany, then we have our final country.
Continuing on the routing, Obermaiselstein seems to be an acceptabe diversion from the Autobahn for tasks and then after that, back on the Autobahn to Salzburg. Going to Obermaiselstein gets the teams farther north of the spine of the Alps and at lower altitude, which might explain why there is no snow there yet and no huge peaks in the background of the promos of some tasks. Taking the diversion off the Autobahn to Obermaiselstein and back to the Autobahn, makes the driving time from Interlaken to Salzburg at about 7 hours.
I remember in TAR9, that the teams had to drive from Stuttgart to Bad Tolz and back to Munich. So WRP has previously had teams drive in this part of the world. They had to put on Lederhosen and break bottles or dance. So the beer/cake tent could be in Bavaria as well.
Interlaken to Obermaiselstein to Salzburg.
Anyway, nothing earthshattering, just some wierd/strange thoughts at 4 am.