No Where, But Up

All around Thailand there are a group of people who are pretty great at what they do. I know I would not want to take on the task that these brave souls do day in and day out. It seems like a dangerous job, but someone's got to do it. What is it?
We all know that pickup truck are used for hauling items. These people have taken hauling to new heights, literally. They fill their pickups with so much stuff that there is no more space, but up. Their trucks are packed so high it's scary. There are a lot of issues to deal with when overloading a pickup truck and then driving it. They seem to have a knack for defying the odds. Which is pretty amazing to me considering the road conditions and other drivers out there. But these drivers for the most part do it well and they usually have a huge smile. I have not seen any accidents involving these filled to the brim pickup trucks. I commend them for hauling their loads and keeping safe. I would not want to drive those vehicles.