On your list of worst nightmares, where does suddenly-plunging elevator rank?If not number one, at least in the top five, right?For Greta Van Susteren, that bad dream suddenly became reality as the car abruptly dropped four floors with no warning at all, then left her and several others trapped between levels with no way out. Lasting 10 frightening minutes, they were finally able to pry the doors open and crawl out.Incidentally, if a lift is headed uncontrollably to the bottom, the best possible way to survive is to lie flat on the floor.The incident happened in Hanoi as the Fox...