UNEXPECTED ACCELERATION OF ENGINE WHEN AT COMPLETE STOP (AT STOP SIGN) AND FOOT HAD BEEN ON BRAKE FOR AT LEAST 30 SECONDS. SHIFT WAS IN DRIVE, ENGINE WENT FULL SPEED, ALL WHEELS SPUN ON GROUND, CREATING MUCH SMOKE. FOOT REMAINED ON BRAKE. NOTE THAT ACCELERATOR PEDAL WHEN NOT ENGAGED IS BELOW LEVEL OF BRAKE PEDAL WHEN IT IS ENGAGED AND THAT WHEN ACCELERATOR PEDAL IS FULL DOWN THEN ITS LEVEL IS 3 INCHES BELOW THE BRAKE PEDAL LEVEL WHEN IT IS ENGAGED. RIGHT FOOT WAS ON BRAKE - THUS NO WAY FOR OPERATOR ERROR SINCE IF FOOT HAD BEEN OFF BRAKE THE VEHICLE WOULD HAVE SHOT FORWARD INTO INTERSECTION AND THERE WOULD HAVE BEEN A MULTIPLE CAR ACCIDENT. AND THERE IS NO WAY TO HAVE RIGHT FOOT ON BRAKE AND TO HAVE ACCELERATOR FULL DOWN AT THE SAME TIME. SHIFTED TO NEUTRAL, ENGINE CONTINUED TO RACE, SOME NOISE WHEN SHIFTED - MAY HAVE HARMED TRANSMISSION. TURNED OFF IGNITION SWITCH AND ENGINE STOPPED. VEHICLE STARTED NORMALLY AFTER THIS. AC WAS ON. CAR HAD FULL DEALER SERVICE AT 45,661 MILES AND STATE INSPECTION A WEEK BEFORE THIS INCIDENT. AT 45755 MILES, TECH CONFIRMED SES LIGHT; FOUND CODE P0150 OXYGEN SENSOR- NOT REPLACED, SOFTWARE UPDATED FOR ENGINE CONTROL MODULE. UPDATED 06/24/11 *BF