I WAS DRIVING ON I-10. I MADE A ROUTINE LANE CHANGE. AT THAT MOMENT I LOST COMPLETE CONTROL OF MY VEHICLE. MY STEERING FAILED. I WAS REAR-ENDED. I WAS SHOVED INTO ANOTHER CAR ON MY DRIVER SIDE. I CAME TO REST ON A CONCRETE BARRIER. THE MECHANIC AT THE COLLISION CENTER SAID THE RACK AND PINION FELL APART. A PRIVATE MECHANIC EXAMINED THE MAZDA AND ALSO CONCLUDED THAT THE SHAFT IN THE RACK AND PINION UNIT FAILED DUE TO A DEFECTIVE PART.