2008 LEXUS GS450H Engine Problems

I AM THE OWNER OF A LEXUS 2008 GS450H AND TAKE EXCELLENT CARE OF MY VEHICLE. ON JUNE 10, 2017, I TOOK MY CAR TO THE LEXUS OF ROSEVILLE DEALERSHIP IN ROSEVILLE, CALIFORNIA FOR THE 80K MILE SERVICING.. NO OTHER WORK WAS PERFORMED ON MY VEHICLE BETWEEN JUNE 10 - AUGUST 29, 2017 AND NO ONE WAS EVEN UNDER THE HOOD OF THE VEHICLE. LEXUS OF ROSEVILLE IS RESPONSIBLE FOR THE DAMAGE, SUBSEQUENT EXPENSES TO REPAIR AND RELATED EXPENSES. AS I AM SURE YOU ARE AWARE, PART OF THE LEXUS MULTIPOINT INSPECTIONS REQUIRES SERVICE PERSONNEL TO PERIODICALLY INSPECT AND ADJUST THE ENGINE COOLANT (RADIATOR) AND RADIATOR CAP TO DETERMINE WHETHER IT NEEDS REPLACEMENT OR REPAIR. THE ATTACHED SERVICE HISTORY REFLECTS THAT THIS SIMPLE INSPECTION WAS NEVER COMPLETED DURING THIS JUNE 10, 2017 SERVICING. ON AUGUST 29, 2017, WHILE DRIVING TO ARIZONA FROM CALIFORNIA, THE RADIATOR CAP FAILED CAUSING THE ENGINE...