One reason why Alaskan trucks might be in such bad shape...
One reason we have so many beat-up PSD's up here is that the oil companies all use 1 ton ford PSD's and have for years. In Prudhoe Bay (where all of the oil comes from) there is a Ford warranty center and not much else (to put that in perspective, I really mean that there is a post office and a ford warranty center, everything else is owned by the oil companies). All of the trucks are the same to make it easy to repair/replace, and because the PSD's seem to hold up to the harsh weather the best. 50 below is common up there in the winter, and I dont shut my truck off at work for weeks at a time. The roads are rough, the employees drive the heck out of them, and they arent always maintained the best. So anyways, the oil compaines (mainly BP) surplus the trucks as they replace the fleet and good prices can be found. We call Prudhoe Bay the North Slope, hence "slope trucks" and they are usually in pretty bad shape. WARNING: If you are shopping for PSD's in Alaska and you find on the CARFAX that it has ever been registered in Deadhorse, or Prudhoe Bay Alaska, it has been driven very hard. Another dead giveaway is that they usually have ghosts from ID numbers on the fenders, or that they are ugly "BP Green"
Maybe you were just kidding when you asked what the deal was with trucks up here being in bad shape, but this might be one reason.