WHILE DRIVING ON HIGHWAY 50 ABOUT 20 MILES FROM SOUTH LAKE TAHOE MY CAR JUST STALLED OUT WHILE TRAVELING AT THE SPEED OF ABOUT 55 MPH. STEAM/SMOKE FROM COMING FROM THE FRONT END. AS I PULLED OVER TO THE SIDE OF THE ROAD OTHER MOTORIST TRAVELING WEST BOUND STARTED HONKING AND POINTING TO THE VEHICLE. AFTER STOPPING IS WHEN WE REALIZED THE ENGINE AREA WAS ON FIRE. AFTER OPENING THE DRIVER SIDE DOOR THE FLAMES SHOT OUT FROM UNDER THAT CAR CAUSING 3RD DEGREE BURNS TO THE BACK CALF ON MY LEFT LEG. THE CAR WAS IN TOTALLY IN FLAMES WITHIN 5 TO 10 MINS.