Some US PW units ended up in Mexico's DF, that is Mexico City. WBB did one from Canada, so what about the southern end of NAFTA?
Very true Dominic, I don't think anyone made one for Mexico City or the Line that went from El Paso to Juarez called the International Trolley Line by many.
A quick (and incomplete) Internet search reveals that not only did Mexico City have Peter Witt streetcars, but so did the Mexican coastal city of Veracruz.
Veracruz's streetcars were often second-hand, and it looks like they had a lot of single-truck Birneys over the year. Veracruz's Peter Witt cars were second-hand, too. They came from Mexico City.