For anyone who may be interested, France's national rail company is set to abolish its car train service between Paris and six destinations in the south in December 2019.
https://www.thelocal.fr/20190411/sncf-set-to-cut-car-train-service-between-paris-and-the-south
https://www.thelocal.fr/20190411/sncf-set-to-cut-car-train-service-between-paris-and-the-south