There was quite some fuss a few weeks ago about a company called Travelski claiming to run a night train Paris to the Alps ⛰ for skiiers, and from the coming season https://www.travelski.com/travelski-night-express

But I can find no evidence HOW they can do this, so I made a #BullshitMeter for it

Embarquez pour un séjour au ski plus responsable avec Travelski Night Express

Partez au ski sans stress et profitez jusqu'à 8 jours de ski avec notre offre Travelski Night Express. Offre : Train de nuit + Hébergement + Forfait + Matériel inclus !

(And yes, there is a SNCF night train to Briançon which you can use to go skiing, but the destination of this private one is supposed to be Bourg St Maurice to serve a lot of the much larger resorts)
@jon I haven't checked things like exact wording or where is Brançion, but could it be reserved carriages from existing night train and bus transport to Bourg St Maurice with some marketing BS?
@jon Now I checked the page and even with my non-existent French it looks like just that. And Travelski sound like a travel company organising ski trips, not a train operator.
@jautero Do you think I really didn't check that? The answer is NO, it is NOT THAT. It is a train to go to Bourg St Maurice, with a dining car (that SNCF does not even have).