2015 BMW 328XI Power Train Problems

SECOND EPISODE WITH THIS 2015 BMW 328XI AFTER THE BRAKES FAILED IN THE FIRST REPORTED EPISODE WITH SPORT MODE. ON TUESDAY APRIL 21 IN THE AFTERNOON MY WIFE WAS DRIVING ON WINTERS AVE. IN PARAMUS NJ IN ECO MODE, HAVING DECIDED TO NEVER TOUCH THE DEFECTIVE SPORT MODE BUTTON AGAIN. SHE WAS DRIVING NORMALLY, THEN OUT OF THE BLUE WHILE PRESSING ON THE GAS PEDAL, THE CAR SUDDENLY DOESN'T WANT TO GO AND CARS BEHIND STARTED BEEPING AND THEN THE CAR STARTS SWERVING AND LIGHTS UP THE ORANGE SYMBOL OF SWERVING ON DASHBOARD. SHE WENT INTO A PARKING LOT WHILE STILL SWERVING AND CALLED ME. SHE PARKED AND TRIED TO SHUT CAR OFF TO LET IT RESET. SHE RESTARTED IT AND IT CONTINUED TO HAVE THE SAME PROBLEM IN THE PARKING LOT. SO WE CALLED AAA WHO TOWED THE CAR HOME AND WE CALLED BMW DEALER. NEXT AM WEDNESDAY APRIL...

THIS IS A LOANER DEALER CAR WITH AN AUTOMATIC TRANSMISSION. I WAS EXITING A STATE HIGHWAY, TURNING RIGHT ONTO THE EXIT RAMP TO SLOW AT A TRAFFIC SIGNAL, AND APPLIED THE BRAKE PEDAL WITH MY RIGHT FOOT. I SLOWED FROM 45 MPH TO ABOUT 10 MPH, WITH MY RIGHT FOOT ON THE BRAKE PEDAL. THE ENGINE REVVED AND RACED UP TO ABOUT 6500 RPM AS I HELD MY RIGHT FOOT ON THE BRAKE PEDAL. WITH MUCH BRAKING FORCE, I DID GET THE CAR TO SLOW AND STOP. I THEN PRESSED THE PARK BUTTON AND HIT THE STOP BUTTON TO KILL THE ENGINE. AFTER A FEW MOMENTS, I THEN RE-STARTED THE CAR AND PULLED OVER TO THE CURB. I DID RETURN THE LOANER CAR TO THE DEALERSHIP. TO BE ABSOLUTELY CLEAR, I HAVE BEEN DRIVING FOR 30+ YRS, AND I WAS NOT RACING, SPEEDING, DRUNK, NOR DRIVING WITH BOTH FEET. SOMETHING...