There currently are a variety of options to travel by night train from Jenbach (Austria) to Osnabrück (Germany), taking between approximately 10 and 11 hours: Namely the UEX 1302, the UEX 1306 and the UEX 1308. These lines are operated by UEX.
UEX (Urlaubs-Express) operates seasonal night trains, including car-carrying trains (Autoreisezüge), from Germany to Austria and back.
Options range from seats and shared couchettes to private couchette compartments, sleeper compartments and connected sleeper cabins.
You can bring your car, but only between the car terminals, and you book the vehicle along with your ticket.
Skis travel free in the ski compartment. A bistro on board sells drinks and snacks.
There is a reduced fare for children who have their own seat or bed.