France Revives Train Hotels as a Low-Carbon Alternative to Short Flights — Sleeping Your Way Across the Country France is bringing back overnight “train hotels”—modern sleeper trains designed to replace short-haul flights with a far more climate-friendly option. Instead of boarding a plane, passengers can fall asleep in private cabins and wake up in another city, cutting emissions while saving time otherwise lost to airports. The revival modernizes a classic idea: comfortable beds, quiet cars, a