TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Arrangement: The system comprises a filling station for a vehicle which utilizes the product as a fuel source. The fresh transferring unit and spent transferring unit are controlled to operate to load fresh onto and remove spent from a user on an equal exchange basis. The spent storage vessel further includes a unit for delivering spent to a rehabilitation facility. The unit for delivering spent to a rehabilitation facility comprises a direct connection to an on-site rehabilitation facility, a spent dispensing apparatus capable of connection to a mobile rehabilitation facility, and/or a spent dispensing apparatus capable of connection to a mobile storage vessel for transport to a remote rehabilitation facility. The system further comprises a unit for detecting chemical and/or physical property of fresh, product, spent and/or carrier. The detector comprises viscometer, conductivity and density measuring device, chemical analyzer, gas analyzer, chromatograph, ultraviolet/visible sensor, light and infrared light (IR) sensor, microwave sensor, nuclear magnetic resonance (NMR) spectroscopy, magnetic susceptibility, and/or laser technology. The system further comprises an intermediate spent storage vessel disposed in the communicable connection between the spent transferring unit and the spent storage vessel. The intermediate spent storage vessel further includes a controllable communicable connection for selective transfer of spent from the intermediate storage vessel to a contamination storage vessel or the spent storage vessel. The unit for rehabilitating spent into fresh comprises regenerator, product manufacture unit, carrier manufacture unit, recycling unit, purifier, analyzer, and/or tester. The vessels comprise a unit for separating fresh from spent, and fixed dividers within the user storage vessel, movable dividers within the user storage vessel, bladder within the user storage vessel, chemical separation of fresh and spent based upon inherent or modified properties of each, physical separation of fresh and spent based upon inherent or modified physical properties of each, and/or dedicated compartments for each of fresh and spent. The user is connected to either of the fresh transferring unit or the spent transferring unit by connecting the user to both the fresh transferring unit and the spent transferring unit, and further comprises transferring fresh to the user and transferring spent from the user.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The product comprises hydrogen, fluorine, chlorine, oxygen, arsine, stilbene, phosgene, methane, hydrogen fluoride, gases containing boron, phosphorus, aluminum, and/or silicon components, preferably hydrogen. The carrier comprises ionic liquid(s), preferably dehydrogenated organic chemical(s). The fresh comprises hydrogenated derivative(s) of the organic chemical, and the spent comprises partially dehydrogenated derivative(s) of the fresh.