WHILE DRIVING CAR ON SMALL COUNTY HIGHWAY, ENGINE STALLED. PULLED CAR TO SHOULDER AND SMELLED ELECTRICAL BURNING SMELL. GOT OUT TO CHECK CAR AND SAW SMOKE. WITHIN MINUTES ENTIRE ENGINE COMPARTMENT WAS ON FIRE. FIRE BURNED THROUGH HOOD AND BROKE WINDSHIELD. ENTIRE ENGINE BAY WAS DESTROYED. CAR WAS RUNNING PERFECTLY. HAD BEEN PURCHASED ONLY 5 WEEKS PRIOR FROM DEALERSHIP. THERE WERE NO WARNING LIGHTS OR ANY SORT OF SIGNS THAT SOMETHING WAS WRONG WITH THE CAR. CAR ONLY HAD APPROXIMATELY 50K MILES ON IT.