DRIVER #1 WAS TRAVELING NE AND ROUNDING A BEND. ANOTHER VEHICLE TRAVELING IN THE OPPOSITE DIRECTION WAS DRIVING IN CENTER OF ROAD. DRIVER #1 VEERED VEHICLE FURTHER NE TO AVOID A COLLISION. DRIVER #1 LOST TRACTION AND VEHICLE SPUN OUT. THE FRONT END OF DRIVER #1 VEHICLE HIT SNOW BANK AND BOULDER. VEHICLE THEN BECAME STUCK IN A DITCH. DRIVER #1 ATTEMPTED TO ROCK VEHICLE OUT OF DITCH WITHOUT SUCCESS. DRIVER #1 THEN PUT VEHICLE INTO 4-WHEEL DRIVE AND ACCELERATED IN REVERSE. THE FRONT WHEELS OBTAINED TRACTION. THE ENGINE ACCELERATOR BECAME STUCK IN THE OPEN POSITION WHICH CAUSED THE VEHICLE TO THRUST BACKWARDS ACROSS ROAD AND DOWN A 23-25 FOOT EMBANKMENT. DRIVER #1 ATTEMPTED BUT COULD NOT STOP VEHICLE. VEHICLE LANDED IN A CANYON ON SOME TREES AND ROCKS SEVERELY DAMAGING THE VEHICLE. DRIVER #1 WAS SEVERELY INJURED IN ACCIDENT WITH HYPOTHERMIA AND A C2 FRACTURED VERTEBRA. *TR