Cab car Bt 2935224 + RABe 526 680 + RABe 526 681 with a S29 service Stein am Rhein - Winterthur. These trainsets were constructed in 1998/1999 by Stadler for the Mittelthurgau-Bahn (MThB).
Testrun with a high speed train "Giruno" of Stadler between Etzwilen and Seuzach, a single track line with a lot of curves, ideal for measuring trains.
It is not the new observation car of SBB : The Siemens doubledeck commuter trainset 514 046 is for repair in Olten.