Sleeping cars, while still existing, are pretty much a dying species in Europe. Significantly higher speeds made them pretty much obsolete. While, for example

Sleeping cars, while still existing, are pretty much a dying species in Europe. Significantly higher speeds made them pretty much obsolete. While, for example, it used to take 7+ hours to get from Zurich to Paris (and artificially longer, if it was a night train) the trip now takes 4 hours by TGV.