They have (or had) bus services somewhat similar to Greyhound in the US. A friend and I took a trip to the Iguacu falls from Asuncion (more than 20 years ago, g

They have (or had) bus services somewhat similar to Greyhound in the US. A friend and I took a trip to the Iguacu falls from Asuncion (more than 20 years ago, granted), which was an overnight bus trip with a brief stop in Ciudad del Este. It was reasonably comfortable as these things go. In a car it would be quicker but still probably 5 - 6 hours even though it's not much more than 200 miles because, as you've pointed out, the roads aren't amazing. The railway had closed down only a few years before I visited but, at that time, there was little hope of it reopening. I've no idea what's happened since.