TL* THE CONTACT OWNS A 2021 TESLA MODEL Y. THE CONTACT STATED THAT WHILE ATTEMPTING TO PARK INTO A PARKING SPACE AT A VERY SLOW SPEED THE VEHICLE SUDDENLY EXPERIENCED UNINTENDED ACCELERATION. THE CONTACT INDICATED THAT THE FAILURE OCCURRED WHILE IN A STORE PARKING LOT AND THE VEHICLES SPEED HAD INCREASED TO APPROXIMATELY 50 MPH. DURING THE INCIDENT DRIVER LOST CONTROL OF THE VEHICLE AND DROVE DOWN AN EMBANKMENT BEFORE THE VEHICLE STOPPED. NO INJURIES WERE REPORTED AND NO POLICE REPORT WAS TAKEN. THE VEHICLE WAS TOWED AWAY. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE MANUFACTURER AND LOCAL DEALER WERE NOT YET NOTIFIED. THE FAILURE MILEAGE WAS 600.