DRIVING 2004 JEEP GRAND CHEROKEE LTD ON SERVICE ROAD OF I75 IN DALLAS. NORMAL ROAD CONDITIONS AND VISIBILITY. SUDDEN ENGINE ACCELERATION WHICH COULD NOT BE SLOWED BY BRAKING AND SHIFTING INTO NEUTRAL. TO AVOID A REAR END COLLISION, THE JEEP CRASHED HEAD-ON THROUGH IRON FENCING AND INTO TREES. THE AIRBAGS DID NOT DEPLOY. CAR WAS DEEMED A TOTAL LOSS BY THE INSURANCE COMPANY. I HAD THE CAR INSPECTED BY MASTER MECHANICS BEFORE IT WAS TAKEN OFF BY THE INSURANCE COMPANY. THEIR REPORT SAID THAT THE "THROTTLE CABLE LINKAGE SLEEVE SLID UNDER THE THROTTLE BODY PIVOT CAUSING THE THROTTLE TO REMAIN OPEN." *TR