I noticed how well maintained the equipment seemed to be.
Short story: I was in Vietnam in 1970 when the line from Danang to Phu Bi (just below Hue, and the location of the Hue airport) was reopened. The first train (steam powered, they didn't want to risk their new diesels) had among its cargo a huge cardboard case of Coca-Cola on a flatcar. When the train arrived at Phu Bai there was some surprise at how light the case was. Turned out the was a small hole in one lower corner through which all of the cans had been removed.
Ned