The “Croatia” is a long-distance train between Zagreb, Maribor, Graz and Vienna.
Since 2018 DoN’s is the caterer of the ÖBB dining cars (en: Austrian Federal Railways).
The “Transalpin” is a famous long-distance train between Switzerland and Austria. Currently it links Zürich (Switzerland) with Graz (Austria) once a day per direction.
The “Vindobona” is a famous long-distance train between Berlin, Prague and Austria.