NHTSA Complaint #10478849 — 2006 ISUZU ASCENDER

I WAS DRIVING AT OVER 60 MILES IN A VERY BUSY HIGHWAY AND ALL OF A SUDDEN MY ISUZU ASCENDER 2006 SUV SLOWED TO 40 MILES AND IT FELT IT WAS GOING TO JUST STOP. I FREAK OUT AND TRY TO GIVE IT GAS AND NOTHING HAPPEN. FINALLY I TRIED TO MOVE TO THE RIGHT SIDE TO AVOID AN ACCIDENT AND POSSIBLE DEATH,WHILE DOING THIS I FELT IT SHIFTED AND STARTED TAKING SPEED AGAIN GOT OF THE HIGHWAY AND TOOK THE BACK ROADS TO GET HOME. I WAS A NERVOUS WRECK BY THE TIME I GOT TO MY HOUSE. THE FOLLOWING DAY WE TOOK THE CAR TO A DEALERSHIP AND THEY COULD NOT FIND A PROBLEM EVEN THOUGH THE ENGINE LIGHT HAS BEEN ON FOR OVER A MONTH. I WAS TOLD TO BRING THE CAR WHEN THIS HAPPEN AGAIN!! THEN MY HUSBAND DROVE THE CAR TO THE STORE ONE NIGHT AND WHEN HE WAS ALMOST GETTING BACK TO THE HOUSE THE CAR WITHOUT WARNING COMPLETELY STOP IN THE MIDDLE OF THE ROAD. HE HAD PUSH IT TO THE DRIVE WAY.THE FOLLOWING DAY THE CAR STARTED AND HE TOOK IT AGAIN TO A DIFFERENT PLACE TO HAVE IT CHECK AND WAS TOLD THE SAME THING THEY NEED TO CHECK THE CAR WHEN IT SUDDENLY STOPS! I AM FRIGHTEN TO DRIVE THIS CAR AGAIN. WHY IS SO DIFFICULT TO FIND WHAT THE PROBLEM IS. THE DIAGNOSTIC TEST THAT WE HAVE DONE IS NOT FINDING THE PROBLEM. WHAT ARE MY OPTIONS! *TR