WHILE PARALLEL PARKING ON A CITY STREET, MY VEHICLE (TESLA MODEL X 2017) ACCELERATED UNINTENTIONALLY AND PUSHED THE VEHICLE #2 INTO THE VEHICLE #3 IN FRONT OF IT. MY VEHICLE ACCELERATED WITH SUCH FORCE THAT THE POLICE OFFICER THOUGHT MY VEHICLE WAS GOING AT LEAST 25MPH WHEN IT HIT THE CAR IN FRONT. AT THE TIME OF THE IMPACT, MY HEAD WAS THROWN FORWARD AND I COULD NOT RECALL IF I HAD STEPPED ON THE BRAKE OR THE ACCELERATOR.