1. A COMBINATION RAILWAY AND PASSENGER AUTOMOBILE TRANSPORTATION SYSTEM COMPRISING: A STRETCH OF RAILWAY TRACK HAVING A WIDE GUAGE OF AT LEAST 10 FEET; A RAILWAY MOTOR CAR ADAPTED TO RUN ON SAID STRETCH OF RAILWAY TRACK AND INCLUDING AN ELONGATED LONGITUDINALLY EXTENDING UNDERFRAME SUPPORTED ADJACENT TO THE OPPOSITE ENDS THEREOF BY A PAIR OF MOTOR DRIVEN RUNNING GEARS HAVING SAID WIDE TRACK GAUGE NAMED AND ENGAGING THE RAILS OF SAID TRACK, A BODY CARRIED BY SAID UNDERFRAME AND HAVING A SUBSTANTIALLY BOX-LIKE CONFIGURATION AND INCLUDING A SUBSTNTIALLY HORIZONTAL FLOOR AND A GENERALLY HORIZONTAL ROOF AND A PAIR OF UPSTANDING END WALLS, THE HORIZONTAL PLATE OF SAID FLOOR BEING DISPOSED AT LEAST 40 INCHES ABOVE THE RAIL HEADS OF SAID TRACK, SAID FLOOR HAVING A LENGTH OF AT LEAST 100 FEET AND A WIDTH OF AT LEAST 20 FEET, A FIRS PLURALITY OF LONGITUDINALLY SPACED-APART UPSTANDING POSTS ARRANGED AT ONE OPEN SIDE OF SAID BODY AND JOINING SAID FLOOR AND SAID ROOF, A SECOND PLURALITY OF LONGITUDINALLY SPACED-APART UPSTANDING POSTS ARRANGED AT THE OTHER OPEN SIDE OF SAID BODY AND JOINING SAID FLOOR AND SAID ROOF, SAID POSTS BEING ARRANGED IN COORDINATE LATERALLY PAIRS SO AS TO PROVIDE A PLURALITY OF COORDINATE LATERALLY ALIGNED CONFRONTING DOORWAYS IN THE OPPOSITE SIDES OF SAID BODY, WHEREBY A PASSENGER AUTOMOBILE MAY BE DRIVEN ONTO OR OFF OF SAID FLOOR THROUGH EITHER OF THE TWO LATERALLY ALIGNED CONFRONTING DOORWAYS OF ANY COORDINATE PAIR, EACH OF SAID DOORWAYS HAVING A WIDTH BETWEEN THE ADJACENT PAIR OF SAID POSTS TO ACCOMMODATE THE SIMULTANEOUS LOADING OR UNLOADING THERETHROUGH OF AT LEAST TWO PASSENGER AUTOMOBILIES DISPOSED IN SIDE-BY-SIDE RELATION WITH EACH OTHER, THE DIMENSIONS OF SAID FLOOR ACCOMMODATING THE SIMULTANEOUS SUPPORT AND STORAGE THEREUPON OF A SUBSTANTIALLY NUMBER OF PASSENGER AUTOMOBILIES EXTENDING LATERALLY THEREOF AND DISPOSED IN SIDE-BY-SIDE RELATION WITH EACH OTHER, A PLURALITY OF DOORS RESPECTIVELY ASSOCIATED WITH SAID DOORWAYS AND SELECTIVELY MOVABLE BETWEEN OPEN AND CLOSED POSITIONS WITH RESPECT THERETO, AND MOTOR MEANS FOR SELECTIVELY MOVING SAID DOORS BETWEEN THEIR OPEN AND CLOSED POSITIONS; AND A TOOL PLAZA INCLUDING A PAIR OF PLATFORMS RESPECTIVELY DISPOSED ON OPPOSITE SIDES OF A SECTION OF SAID TRACK AND POSITIONED SUBSTANTIALLY IN THE HORIZONTAL PLANE OF SAID FLOOR WHEN SAID RAILWAY MOTOR CAR OCCUPIES A COORDINATE STOP POSITION IN SAID SECTION OF SAID TRACK, THE CONFRONTING EDGES OF SAID PLATFORMS BEING DISPOSED SUBSTANTIALLY PARALLEL TO EACH OTHER AND SPACED-APART BY A DISTANCE THAT IS ONLY SLIGHTLY GREATER THAN THE WIDTH OF SAID FLOOR, WHEREBY A PASSENGER AUTOMOBILE ON EITHER ONE OF SAID PLATFORMS MAY BE DRIVEN DIRECTLY ONTO SAID FLOOR WHEN SAID RAILWAY MOTOR CAR OCCUPIES ITS COORDINATE STOP POSITION AT SAID TOOL PLAZA, AND WHEREBY A PASSENGER AUTOMOBILE OCCUPYING A LOADED POSITION ON SAID FLOOR MAY BE DRIVEN DIRECTLY ONTO EITHER ONE OF SAID PLATFORMS WHEN SAID RAILWAY MOTOR CAR OCCUPIES ITS COORDINATE SOTP POSITION AT SAID TOLL PLAZA.