I WAS COMING OFF OF AN ONRAMP AND INTENDING TO TURN RIGHT AT THE LIGHT. I NEEDED TO GET INTO THE LEFT LANE AS I WAS TURNING LEFT AT THE NEXT BLOCK. I APPLIED THE BRAKES TO SLOW DOWN AND MAKE THE TURN AND NOTHING HAPPENED WHEN I PRESSED ON THE BRAKES. I ENDED UP GOING UP OVER THE CURB AND THE PLANTS STOPPED THE CAR. THE ENGINE WAS OFF WHEN I CAME TO A STOP, THOUGH I DIDN'T TURN IT OFF. IF THERE HADN'T BEEN A MERIDIAN IN BETWEEN THE CROSS TRAFFIC, I WOULD HAVE GONE INTO THE LANES AHEAD OF ME. VERY SCARY. I HAD MY CAR TOWED TO TOYOTA TO CHECK IT OUT FIRST, BUT THERE LOOKS TO BE THOUSANDS OF DOLLARS OF DAMAGE TO MY PRIUS. THE WHOLE LOWER FRONT IS SMASHED AND CRUNCHED, THE TWO LEFT SIDE TIRES ARE FLAT AND THE RIM IS PARTIALLY TORN OFF ON THE FRONT TIRE. *TR