Driving in Port au Prince is a nightmare. It is actually possible to run out of gas in a traffic jam. I sat stuck in traffic on a narrow street, basically one dirt track for about 45 minutes while two large dump trucks tried to make their way down this passage with  and  against a two way flow of regular traffic. Part of the thing is that some drivers drive right up to each other from opposing directions so that neither one has anywhere to move, and everyone behind them is bumper to bumper so then there's no where to go. Then everyone sits while that works itself out. Multiply that by two dump trucks and you get the idea. I would have taken a picture with my phone but several people have warned me that armed robberies are on the rise in town and smartphones are one of the things being targeted.