WHEN I WAS BACKING MY CAR, I SAW A WHITE CAR APPROACHING FROM MY REAR END CAMERA BUT THERE WAS NO SOUND OR WARNING SOUND AS USUAL. I STOPPED MY CAR UNTIL THE CAR PASSED BY. THEN I STARTED BACKING SLOWLY WITHOUT SEEING ANY CAR MOVING OR APPROACHING. SUDDENLY I SAW AN OLD DARK GREEN HONDA CRV CAR ON MY REAR BACK CAMERA CAME FROM NOWHERE WITH HIGH SPEED AND NO WARNING OR SOUND. I PRESSED MY BRAKE IMMEDIATELY. I DID NOT FEEL ANY PULSE OR COLLISION. WHEN I DROVE HOME AND FOUND A SMALL DAMAGE ON MY CAR REAR BUMPER. I FILED AN ACCIDENT REPORT M0153386 IN WASHINGTON STATE.