I WAS FOLLOWING MY WIFE TO THE JEEP DODGE CHEROKEE DEALERSHIP TO GET HER RECALL TAKING CARE OF. ON THE WAY THERE AT THE OFF RAMP OF 575 AND RIVERSTONE PARKWAY I MADE A RIGHT TURN TO GET OFF ON THE RAMP TO EXIT AND I HEARD A LOUD THUD AND THE MOTOR ACCELERATED VERY LOUD AND ODD SOUNDING. I WAS UNABLE TO CONTROL THE VEHICLE. THE ONLY THING I COULD DO TO KEEP FROM RUNNING INTO ANYONE WAS SLAM ON THE BRAKES WHEN I DID THAT THE BREAKS GAVE A LOUD SCREECH AND WAS VERY SLOW TO STOP. I ENDED UP HITTING 3 CARS ON THE LEFT SIDE NONE OF THE AIRBAGS DEPLOYED NOR DID ANY OF THE SEATBELT LOCK SO THE ONLY THING I HAD TO STOP ME FROM HITTING MY HEAD AGAINST THE STEERING WHEEL WAS TO PUT MY HANDS OUT IN FRONT OF ME ON THE STEERING WHEEL. WHEN THE IMPACT HAPPEN IT WAS SO FIERCE THAT MY RIGHT HAND GAVE OUT AND WAS SNATCHED OF THE STEERING WHEEL AND I DAMAGED MY RIGHT ARM ON THE STEERING WHEEL COLUMN. STILL KIND OF HURTS AND I STILL HAVE SCARS.