I WAS DRIVING STRAIGHT ON A CITY ROAD WITH THE FLOW OF HEAVY TRAFFIC AT ABOUT 40 MILES PER HOUR WHEN THE CAR IN FRONT OF ME CAME TO A SUDDEN STOP. I IMMEDIATELY SLAMMED ON MY BRAKES VERY HARD. AT THE TIME I DID THIS I HAD PLENTY OF SAFE DISTANCE BETWEEN US. BUT, THE BRAKES NEVER CAME ON AND I ENDED UP RUNNING INTO THE REAR END OF AN SUV AT APPARENTLY FULL SPEED WITHOUT ANY NOTICEABLE SLOWDOWN. THE BRAKES DID NOT COME ON. THEY DIDN'T GRAB, AND THEY DIDN'T MAKE ANY SCREECHING NOISE AND THERE WERE NO TIRE MARKS ON THE ROAD. ALSO ALL OF THE AIRBAGS DEPLOYED AND THIS WAS A FRONTAL IMPACT, WHICH WAS VERY SURPRISING AND SUFFOCATING. A CLOUD OF DUST FILLED THE CABIN OF THE CAR AND I COULD NOT BREATHE. I WAS LITERALLY SUFFOCATING UNTIL I WAS ABLE TO OPEN THE DOOR AND GET OUT OF THE VEHICLE. I DIDN'T EVEN FEEL THE SEAT BELT TIGHTEN UP BEFORE THE CRASH. THE BRAKES NEVER FELT LIKE THEY CAME ON AT ALL. *TR *JS