The vehicle suddenly started to smoke and burn by itself when driving on the super crowded highway. I immediately stopped the vehicle and found that the burning site was the bottom of the front-left head of the vehicle (please see the images attached). The mechanician I visited after judged that the fire may due to failed electrical parts or system. He suggested to visit a Toyota dealer for recall. However, the Toyota dealer (Crown Toyota, 1201 Kettering Dr, Ontario, CA91761) declined my request with the reason that my vehicle has passed warranty time. The vehicle was just inspected in the Toyota dealer a few days ago. The dealer's inspection report shows that the vehicle does not have any problems besides suggesting to replace tires and front brakes.