AFTER STOPPING AT A RED LIGHT. MADE RIGHT TURN UPHILL. TRUCK ACCELERATED QUICKLY LIKE IT WAS FLOORED. ATTEMPTED TO BRAKE EASILY TO SLOW DOWN. TRUCK SPUN 180 ON PAVEMENT, CRASHING SIDEWAYS INTO ISLAND DIVIDER. RIGHT REAR WHEEL WAS SHEERED OFF. TRUCK WAS STOPPED BY REAR BUMPER SMASHING INTO LIGHT STANDARD. SHEERED WHEEL HAD GRIND MARKS AS WHEELS WERE STILL UNDER POWER. THIS WAS POINTED OUT AT SCENE BY LAW ENFORCEMENT. I AM A RETIRED FIREFIGHTER USED TO DRIVING EMERGENCY EQUIPMENT. MY TRUCK ACCELERATED ON ITS OWN. *TR