"Mexican trains" going down the highway (cars in tow)

I suppose it’s also possible that the cars are shipped to overseas destinations. Cuba has been a destination for well worn cars from the US for a long time. Cars also find their way to Africa. How far are you from a port? It doesn’t have to be a huge port. Wilmington, NC has a good RO/RO business. I’m not suggesting you’re wrong, just offering other possible destinations. Hispanic workers are almost all I see for road and lawn work these days. Maybe low pay is why you see them, no matter the destination.