MATERIALS HANDLING EQUIPMENT-NAMELY, CAPTIVE MOTORIZED TRACKPOWERED CARS, LEVEL ORIENTED CONTAINERS MOUNTED ON SUCH CARS, ELECTRICALLY ENERGIZED TRACK FOR SUCH CARS, AND TRACK TERMINALS: FOR TRANSPORTING VARIOUS LIGHTWEIGHT ARTICLES, FOR EXAMPLE, HOSPITAL MEDICAL RECORDS, BUSINESS RECORDS AND FOODS, IN LEVE ORIENTED STATE THROUGHOUT VERTICAL AND HORIZONTAL TRAVEL BETWEEN TERMINALS