transports ferroviaires – Le train de nuit comme alternative au TGV sur l'axe Franche-Comté / Côte d'Azur

This written question asks about the potential for developing night train services as an alternative to high-speed rail (TGV) on the Franche-Comté to Côte d'Azur route in France. It seeks to understand if such services could offer a more sustainable and potentially competitive travel option, impacting regional connectivity and tourism.