In the last decade or so, a new option has emerged for storing and transporting your possessions. You may have seen one sitting in your neighbor's driveway: a stainless-steel container that looks like a dumpster. It's called a portable moving container or POD, and it's a new moving service a few companies offer. The idea is simple: Instead of forcing customers with a DIY bent to rent a moving van or truck at a high daily rate, pack it in a hurry, unload it in a rush, and retu