Since you want to wade into this,
first of all it is a little more involved than getting your info from a company website designed for the general public. The UP map you included shows a green line representing the FXE (Ferromex) route from Saltilllo, Mex to Eagle pass Tx.
Attached is vin tracking of my vehicle showing the origin (Saltillo) destination (Buffalo) and more importantly the last event location (Piedras Negros) on the Mexican side of the border opposite Eagle Pass where once again it will be handed off to the BNSF which will bring it to Kansas city to be interchanged with the NS who then bring it to Buffalo.
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