I WAS TRAVELLING AT LOW SPEEDS AND WAS GETTING READY TO APPLY MY BRAKES TO STOP AT AN INTERSECTION. I HIT A POTHOLE WITH MY PASSENGER SIDE FRONT TIRE AT ABOUT THE EXACT TIME I DEPRESSED BY BRAKE PEDAL. THE BRAKE PEDAL WENT DOWN ALMOST TO FLOOR AND I HAD NO BRAKING WHATSOEVER. I STOPPED BY REAR-ENDING THE CAR IN FRONT OF ME. I HAVE NEVER HAD A PROBLEM WITH THE BRAKES AND HAD HAD THEM INSPECTED WITH THE 30,000-MILE SERVICE A COUPLE OF DAYS EARLIER. SEEMS LIKE IT MAY HAVE HAD SOMETHING TO DO WITH HITTING THE POTHOLE.