I'm travelling to Lyon and St Etienne in early May then travelling a circuit via Grenoble, Veynes-Devoluy, Aix-en-Provence, Marseille, Béziers, Neussargues, Clermont-Ferrand, Roanne and back. I'm hoping for loco haulage IC trains from Marseille to Béziers and Clermont to Vichy, but are there any...