AT OUR DRIVEWAY ON SUN. 1/14/18, COMING BACK FROM SHOPPING A FEW MINUTES BEFORE FOUR PM, SUDDENLY THE CAR TOOK OFF BY ITSELF. IT ACCELERATED TREMENDOUSLY WITH THE SPEED WHICH WAS FELT AROUND 65-80 M/HR, HITTING OUR HEAVY GARAGE DOOR, WHICH WAS CLOSED AT THE TIME, WENT THROUGH THE GARAGE, HIT MY PARKED PORSCHE AND PUSHED IT TO THE LEFT TO THE WATER HEATER. IT THEN HIT AND BROKE THE WALL BETWEEN OUR GARAGE AND COURTYARD, BROKE AND PUSHED OUR CONCRETE PLANTER AND STOPPED HALFWAY BETWEEN THE GARAGE AND OUR FAMILY ROOM WINDOWS IN THE COURTYARD.I FIRMLY BELIEVE THAT THIS WAS THE RESULT OF UNINTENDED ACCELERATION. THIS IS OUR NEW AND SECOND TESLA MY WIFE AND I OWNED AND DROVE.WHEN MY WIFE TALKED TO LOCAL TESLA REPRESENTATIVE, HE REFUSED TO GIVE US ANY COMPUTER GENERATED REPORT.THE CAR STILL ON THE WALL BETWEEN GARAGE AND COURTYARD. WE UNDERSTAND, TESLA HAS A BLACK BOX THAT WE DO NOT KNOW WHERE IT WILL END UP IF WE TAKE IT TO TESLA CERTIFIED BODY SHOP.WE APPRECIATE IT VERY MUCH IF YOU ADVISE US WHAT TO DO.