2011 Honda Insight VEHICLE SPEED CONTROL,ENGINE

THIS IS AN UPDATE TO ODI # 10628879, CREATED IN AUG. 2014. INSIGHT HYBRID IS STOPPED AT INTERSECTION--AUTO IDLE STOP. SUDDENLY ENGINE RACES WILDLY, TACHOMETER REGISTERS GREATER THAN 3,000 R/MIN. USUALLY OCCURS WITHIN THE FIRST 5 MINUTES OF DRIVING AND FIRST 3-5 MILES OF DRIVING. IF I MY FOOT WOULD SLIP OFF THE BRAKE THE CAR WOULD LURCH FORWARD, CREATING A RISK OF A COLLISION WITH THE CAR IN FRONT OF IT. THE HONDA DEALER SPECULATED THAT THE WEATHERTECH FLOOR MAT UNDER THE ACCELERATOR MIGHT BE CAUSING THE PROBLEM, AND AN INDEPENDENT REPAIR SHOP AGREED WITH THIS HYPOTHESIS. I CHOPPED OFF A LARGE PIECE OF THE FLOOR MAT FROM UNDER THE ACCELERATOR. THE PROBLEM DID NOT RECUR FOR SEVERAL MONTHS, BUT RECENTLY HAS RESUMED. SO THE FLOOR MAT IS NOT THE CAUSE. BECAUSE THE RACING STILL OCCURS UNEXPECTEDLY FROM TIME TO TIME, I AM CONCERNED THAT THIS IS A DANGEROUS CONDITION. BUT HONDA CANNOT FIX IT BECAUSE THEY CAN'T DIAGNOSE IT.