general problems of the 1999 Lexus RX300

On January 17th, 2016, I took my '99 Lexus Rx300 to church, parked the car, and joined the Sunday service. An hour after parking the vehicle (during which time it was not running or in use), I was told that there was smoke coming from it and went outside. Within minutes, the front end was bursting in flames. The fire destroyed the entire front portion of the car, including the engine, transmission, tires, and dashboard. I don't know what could have been the cause; it was seemingly random.