SUA INCIDENT - COASTING BEFORE ENTERING GARAGE AS USUAL WITH MY RIGHT FOOT ON FLOOR AND NOT ENGAGED WITH ACCELERATOR OR BRAKE. UPON ENTERING THE GARAGE CAR BEGAN TO ACCELERATE, NATURALLY SHOCKING/BAFFLING ME, AS I HAD ALREADY STARTED BRAKING AND CONTINUED TO DO THAT TO NO AVAIL AS CAR PROCEEDED TO HIT BACK WALL OF THE GARAGE WHERE ACCELERATION STOPPED,CAR CAME TO REST. I NEVER DRIVE WITH TWO FEET AND AM ABSOLUTELY CERTAIN MY FOOT WAS ON THE BRAKE AND BRAKE WAS NOT RESPONDING. ALSO CAR DID NOT ACCELERATE WITH THE SAME SOUND AS IT NORMALLY WOULD IF I PRESSED THE GAS PEDDLE. IT ACCELERATED MORE LIKE IT WAS ON CRUISE CONTROL...VERY SMOOTH AND STEADY. ACTUALLY I'M GRATEFUL THE WALL WASN'T FAR AWAY SO IT DIDN'T ACCELERATE FURTHER. THE INCIDENT HAPPENED JUNE 11,2020 AT AROUND 10 AM. DO NOT KNOW REASON FOR SUA, BUT WILL NOTE THAT WE HAD THE GARAGE DOOR SENSORS REPOSITIONED ON JUNE 10. I'M NOTING THAT BECAUSE WHERE THEY ARE IS ABOUT WHEN I FELT ACCELERATION STARTING. *TR