All the rest of the story is apparantly a result of miscommunication among various people working for the port authority ~ many of whom probably should be deported back to Salerno, Port au' Prince, Vera Cruz and so forth.
Either that, or it was a dry run to see how much resistance they'll get trying to sneak a truck load of explosives into a busy port. And remember, the authorities ALWAYS play down these incidents, especially if they might spook the all-important tourists. Originally, they said the shoe bomber was just a harmless nut, then they said his shoe bomb would cause no damage, and then, when they were starting to look really foolish, they fessed up that the guy was dangerous and prosecuted him.
Plus the fact that the driver was 20 years old. What company would hire someone that young with that little experience ( just the insurance costs alone ) to drive a load that large, that far. Also, one of the "passengers" had no ID. If someone was planning on taking a trip that long, would they travel without any ID ?