I WAS BACKING OUT OF A STORE IN SAN CARLOS MEXICO. I STARTED THE TRUCK, APPLIED THE BRAKE AND PUT THE TRUCK INTO REVERSE. THE TRUCK ACCELATED BACKWARD OUT OF CONTROL AND STRUCK A CEMENT POST IN THE PARKING LOT AND CAME TO A STOP. THE ENGINE CONTINUED TO INCREASE IN RPMS. I TRIED TO PUT THE TRUCK INTO PARK. THE GEAR SHIFT MOVED AND THE TRUCK BEGAN TO ACCELERATE FORWARD. THE BRAKE WAS UNRESPONSIVE AND THE ENGINE CONTINUED TO INCREASE IN RPMS. THE TRUCK ACCELERATED FORWARD OUT OF CONTROL JUMPING A PARKING CURB AND CRASHED INTO THE FRONT OF THE STORE. THE AIRBAGS DEPLOYED. THE FRONT PASSENGER SUSTAINED A FRACTURED FOOT. ONE OF THE REAR PASSENGERS SUFFERED A CONTUSION TO HER FOREHEAD. THERE WAS SIGNIFICANT DAMAGE DONE TO THE FRONT END OF THE TRUCK AND DAMAGE DONE TO THE STORE FRONT. I HAVE NOT BEEN ABLE TO ASSESS THE DAMAGE TO THE TRUCK OR INVESTIGATE THE CAUSE OF THE ACCIDENT BECAUSE THE TRUCK IS STILL BEING HELD IN MEXICO BY THE AUTHORITIES. DT