DRIVING 2008 TOYOTA RAV4 (19K MI) IN RAIN ON NY STATE HWY AT 30 MPH. DRIVER IN FRONT SLOWED. APPLIED BRAKES WHICH SOFTENED THEN WENT TO FLOOR. PUMPING DID NOT RETURN PRESSURE. HAND BRAKE SLOWED VEHICLE TO BELOW 15 MPH. CRASHED INTO OTHER VEHICLE AT @ 12 MPH. CAR BURST INTO FLAMES BENEATH AND CONSUMED VEHICLE WITHIN 12-14 MINUTES; *CN