FIRST INCIDENT WAS APPROACHING A TURN OFF INTO A SHOPPING AREA, A CAR WAS STOPPED THERE WAITING FOR TRAFFIC AS I APPROACHED I APPLIED THE BRAKES AND THE BRAKE PEDAL WENT TO WAY DOWN, I DIDN'T HAVE TIME TO RECYCLE BRAKE PEDAL AS IT WENT SO FAR DOWN I WAS HITTING GAS PEDAL, THUS CAUSING ME TO COLLIDE. SECOND INCIDENT OCCURRED WHILE DRIVING TO TOWN AND A STRONG BRAKE BURNT SMELL WAS OCCURRING, WHEN I ATTEMPTED TO STOP AGAIN BRAKE PEDAL WENT WAY DOWN AGAIN WHICH THIS TIME I HAD TIME TO REGAIN CONTROL FROM HITTING GAS PEDAL AND FORCE STOP, INSPECTED BRAKES AND FRONT BRAKES WERE EXTREMELY HOT AND SMOKING AS IF BRAKES WERE BEING CONSTANTLY APPLIED, I DID NOT FEEL BRAKES BEING APPLIED GOING DOWN THE HIGHWAY JUST SMELL AND INSPECTION OF FRONT BRAKES HEATING UP. I CALLED ROADSIDE ASSISTANCE AND VEHICLE WAS TOWED TO REPAIR STATION WAITING ON RESULTS. I FEEL THAT IF NOT TAKEN CARE OF TOTAL BRAKE FAILURE WOULD OCCUR AND MAJOR ACCIDENT.