WHILE DRIVING ON A MAJOR HIGHWAY, I NEEDED THE BRAKES TO BE APPLIED VERY RAPIDLY AS A VEHICLE CUT ME OFF AND IMMEDIATELY SLAMMED ON THEIR BRAKES. UPON MY FULL AND RAPID PRESSING OF THE BRAKE PEDAL, THE EMERGENCY BRAKE FORCE DISTRIBUTION SYSTEM BRAKING DID NOT APPEAR TO APPLY AS ON PREVIOUSLY VEHICLES I'VE HAD OR HAVE INCLUDING TWO LARGE SUV'S. BRAKE PEDAL WAS APPLIED AND PRESSED WITH FULL AND COMPLETE FORCE TO THE POINT THAT IT NO LONGER WENT ANY FURTHER. CONTINUED IN MOTION, NO SLIDING, MINIMAL ABS KICKED IN. AND ACCIDENT DID OCCUR AS VEHICLE DID NOT STOP IN TIME. PRIOR TO AND SINCE THEN, I'VE PAID MORE ATTENTION TO THE PEDDLE PRESSURE AND LEVEL AND SURE ENOUGH, UNLESS I PREPUMP THE PEDDLE, THE PEDDLE MUST BE PRESSED BEYOND WHAT IS CONSIDERED STANDARD. IF I PREPUMP THE PEDDLE, THEN DRIVE, THE BRAKING IS ULTRA SENSITIVE. I URGENTLY NEED AN INVESTIGATION INTO WHAT IS GOING ON AS I AM PREPARED TO SELL THE VEHICLE BUT WOULD LIKE TO HAVE A PROFESSIONAL REVIEW, TEST, EXAMINE WHATEVER IS NECESSARY TO DETERMINE CAUSE OF SUCH A BRAKE PRESSURE FAILURE. IT IS REPEATABLE, BUT NEED TO KNOW WHO TO CONTACT. WHAT CAN BE DONE IMMEDIATELY?