How oes friction help unbog a car?

Friction does not help unbog a car. In fact, it does the opposite. When a car is stuck in mud or snow, friction between the tires and the ground prevents the tires from gripping and moving the car forward. To unbog a car, you need to reduce friction between the tires and the ground. This can be done by adding traction materials, such as sand or gravel, to the ground or by using a tow truck to pull the car out.