1. AN AMPHIBIOUS VEHICLE HAVING THE GENERAL EXTERNAL APPEARANCE OF A PLEASURE AUTOMOBILE, COMPRISING A SEALED HULL AND BODY STRUCTURE PROVIDING A PASSENGER COMPARTMENT BETWEEN UPRIGHT, LATERALLY SPACED OUTER SIDE WALLS, THE WALLS BEING OF CONTINUOUS EXTERNAL SHEET CONSTRUCTION, FROM THE BOTTOM OF THE SAME TO ABOVE THE NORMAL WATER LEVEL WHEN AFLOAT, SAID WALLS COACTING WITH THE REMAINDER OF SAID STRUCTURE IN DEFINING SEALED, LATERALLY ENCLOSED SIDE SPACES WHICH EXTEND A SUBSTANTIAL DISTANCE IN A FRONT-TOREAR ENDWISE DIRECTION OF THE VEHICLE, SAID VEHICLE HAVING A FOUR-WHEELED UNIT SUPPORTING SAID SEALED HULL AND BODY STRUCTURE FOR THE LAND PROPULSION THEREOF, A PRIME MOVER ENCLOSED BY SAID STRUCTURE, BRAKES DISPOSED IN SAID SPACES AND OPERATIVELY CONNECTED TO EACH OF THE FOUR WHEELS OF SAID UNIT, OPERATING CONNECTIONS FOR SAID BRAKES AT LEAST IN PART EXTENDING IN SAID ENDWISE DIRECTION THROUGH SAID LATERALLY ENCLOSED SPACES, A PROPELLER ROTATIVELY MOUNTED ON SAID HULL AND BODY STRUCTURE, AND DRIVE MEANS OPERATIVELY CONNECTING SAID PRIME MOVER WITH SAID PROPELLER, INCLUDING A CONNECTION FROM THE FORMER TO THE LATTER AT LEAST IN PART EXTENDING THROUGH A LATERALLY ENCLOSED SPACE.