I have traveled on that.
Meanwhile there appears to be a major growth in passenger service in Mexico. 7 routes have been designated for development of an 8,000 km network.
Three of those routes terminate at the US border at Nuevo Laredo, Nogales and Ciudad Juarez. Opens up possibilities for Amtrak to connect to them somehow at some point I suppose.
Anyway, here is the article from The Railway Gazette (might require registration and/or subscription:
Mexican government seeks to revive passenger services on seven routes
For those that cannot access the article, in summary, the seven proposed routes are:
1. Mexico City to Veracruz and Coatzacoalcos on the east coast. (CPKC)
2. North-south Mexico City – Querétaro – Leon – Aguascalientes route. (CPKC)
3. Irapuato to Manzanillo on the west coast via Guadalajara and Colima. (Ferromex, the guys who own FECR)
4. Mexico City to Nuevo Laredo in the northeast, via San Luis Potosi and Monterrey. (CPKC)
5. Mexico City to Nogales on the border with the USA, running along the west coast via Querétaro, Guadalajara, Tepic and Mazatlan. (Ferromex)
6. Aguascalientes via Chihuahua to Ciudad Juarez (Ferromex)
7. Felipe Ángeles international airport and Pachuca. This service would be created as part of a new concession and would form a suburban rail corridor between Pachuca and Mexico City.