2003 INFINITI M45 Structure Problems

I WAS DRIVING ON A HIGHWAY AT A APROXIMATELY 75 MPH WHEN ALL OF THE SUDDEN THE REAR BACK GLASS BLEW OFF THE VEHICLE. I FELT A LITTLE SHAKE AND MU REAR BACK GLASS WAS GONE. *TR

PURCHASED NEW INF. M45 WHEN CAR REACHED ABOUT 24000 MILES. I TOOK IT IN TO BE SERVICED. INFINITI SERVICE WAS UNABLE TO REPRODUCE PROBLEM. WOULD CALL ON SEVERAL OCCASIONS INFORMING DEALERSHIP THAT THEIR PRODUCT WAS DEFECTIVE. I FINALLY GOT TONS OF PROBLEMS (PERFORATED LEATHER SEATS HAD MESH COMING, CD CHANGER JAMMED, AC COMPRESSOR BUSTED, BELTS ON THE MOTOR HAD TO BE REPLACED, GLOVE BOX HAD TO BE READJUSTED, HOOD HAD TO BE READJUSTED TO STOP THE SQUEEKING WHEN CLOSING THE DOORS, FRONT WINDOW GUIDES AND STABILIZER-INNER DOOR HAD TO BE REPLACED TO STOP ALL THE SQUEALING WHEN LETTING THE WINDOWS UP/DOWN) AND SCHEDULE ANOTHER VISIT TO SEE IF THE ENGINE/EXHAUST PROBLEM COULD BE REPAIRED. THE DEALERSHIP HAD MY CAR FOR 3 WEEKS...AND CLEANED OUT THE COMBUSTION CHAMBER AT THEIR COST AND THE DAY I GOT IT BACK, IT WAS STILL SMOKING OUT THE PIPES. THE DEALERSHIP SAYS THEY KNOW NOTHING...