I've always noticed that the "beast" portrayed in videos would appear to be mostly made up of large capacity covered hoppers. Now, not being your typical troll on this subject (e.g. too many appear to be your typical racist loser), I don't really have too much to comment on about the past history of the beast in relation to immigration issues.

I was wondering about a more mundane actual railroading question, what is the traffic base, sources of traffic, and destinations from which those cars make that long trip back and forth to the Guatemalan border? And, what kind of power do they use?

Does anybody om here, who actually knows about, and actually likes, trains, have an answer for that question?