I WAS UNABLE TO SLOW DOWN GOING INTO AN INTERSECTION AT A REASONABLE RATE OF SPEED. WHILE I WAS NOT ACCELERATING, WHEN I APPLIED THE BRAKES THE CAR DID NOT SLOW DOWN AS I WOULD HAVE EXPECTED. THIS SAME BEHAVIOR HAS OCCURRED IN THE PAST SEVERAL MONTHS SINCE I'VE OWNED THE PRIUS 2010 MODEL. IT SEEMS TO SKIP FORWARD OR ACCELERATE WHILE BRAKING ON A DOWNHILL OR UNEVEN SURFACE. BY THE TIME I WAS ABLE TO STOP I THE AIRBAGS HAD GONE OFF AND I HAD HURT MY NECK AND BACK. IT IS A NEW VEHICLE THAT NOW HAS ALMOST $14,000 DAMAGE AND WON'T BE FIXED FOR A MONTH. IF ANYTHING, I'M AN OVERLY CAUTIOUS DRIVER AND WONDERING WHAT I COULD HAVE DONE TO AVOID THE ACCIDENT. *TR