DRIVING BETWEEN 40-45 MPH DRIVESHAFT FELL OUT, DAMAGING ENTIRE UNDERSIDE OF VEHICLE GOUGING FUEL TANK IN SEVERAL PLACES. REAR END FELL LOCKING UP BRAKES AND THROWING VEHICLE INTO UNCONTROLLABLE BOUNCING FOR OVER QUARTER MILE. DRIVESHAFT FLEW INFRONT OF OTHER VEHICLES WINDSHIELD. WIFE(9 MO. PREG.) & SON IN CAR WITH ME. *AK