After checking for traffic behind you, gently steer back onto the pavement. Do not jerk your wheel to correct your steering. This may cause you to drive into oncoming traffic. If smoke appears, pull off the road. Turn off the engine, move away from the vehicle and call the fire department.
Vehicle fires can be very dangerous.
Do not fight the fire yourself. Because of differences in water pressure, you may not be able to open your car door. If your vehicle does sink, move to the back seat area where an air pocket usually forms. Take a deep breath and exit from a rear window. When using your cellular phone while driving, always remember your number one responsibility is driving.