WAS TRAVELING 10MPH WHEN VEHICLE LOST POWER. NOTICED A GLOW UNDER HOOD. STOPPED VEHICLE & JUMPED OUT. VEHICLE CAUGHT ON FIRE IMMEDIATELY AFTERWARDS. FIRE DEPARTMENT ARRIVED & PUT FLAMES OUT. GAVE NO INDICATION OF CAUSE OF FIRE. HAD VEHICLE TOWED TO LEXUS DEALERSHIP. EVERYTHING UNDER THE HOOD WAS CONSUMED BY FIRE & MELTED.*AK