I WAS STOPPED AT A TRAFFIC LIGHT AT THE OFF-RAMP OF EAST-BOUND 202/MCQUEEN RD EXIT. MY RIGHT FOOT WAS ON THE BRAKE PEDAL, WHEN THE VEHICLE BEGAN TO ACCELERATE UNEXPECTEDLY AND HIT THE REAR OF VEHICLE STOPPED IN FRONT OF ME. AS I REALIZED THE COLLISION, I PRESSED THE BRAKE HARDER DELIBERATELY (WHILE THE CAR IN FRONT OF ME HAD STARTED TO MOVE FURTHER), AND TO MY HORROR MY CAR CONTINUED TO ACCELERATE DESPITE MY DEPRESSING THE BRAKE PEDAL. I CONSCIOUSLY CHECKED MY FEET TO ENSURE I WAS PRESSING THE BRAKES AND NOT THE ACCELERATOR. MY CAR CONTINUED TO STRANGELY & UNEXPECTEDLY ACCELERATE UNTIL IT HIT THE SAME CAR IN FRONT OF ME AGAIN THE 2ND TIME AT THE TRAFFIC INTERSECTION. AFTER THE 2ND COLLISION, MY CAR STOPPED AND I PULLED OVER TO THE SIDE OF THE MCQUEEN ROAD.