If the current is too fast, don't risk it, and use a winch to tow the car through. However, if the car is stuck in a stream and the winch is under the water, the winch may not work. Don't count on a winch when the water is deep above the bumper. When the car is deep into the bumper, it is necessary to run the winch motor as fast as possible, so that the heat generated by the winch can not allow moisture to enter the motor.