Talk about opportunists! Like I always say, "When life gives you noodles, pour some hot water in them, and sell them for 5 times the amount of their original retail value!"
Truth be told, some of my favorite products come out of China- paper clips, light bulbs, storage containers, etc. So, I am not surprised at all by their creative venture in an unfortunate situation. Even though they were capitalizing on the misfortune of the poor travelers stuck in traffic for hours, you have to admire their quick thinking and entrepreneurial spirit.
As the Chinese Proverb says, "The Gods cannot help those who do not seize opportunities." And as the Latins say, "Carpe Diem." And as the Rednecks say, "Git 'er done!"....and so on and so forth. You get the point.
By the way, kind of an obvious question: Why didn't the people in traffic realize after about, say, 10 hours, that they were not going anywhere? They could have all gone to a buffet or something. Everyone knows that the Chinese have the best buffets.