Just because a hailstorm starts while you are driving, it doesn't mean that you have to resign your car to serious hail damage. There are measures that can help you to reduce the severity of the paint damage, minimize the size of the dents, and prevent cracks on your car's glasses. Here are four examples of these measures:
Using an Improvised Shelter
You may not have access to a conventional cover, such as a garage, but that doesn't mean that you have to stay out in the open. Improvised covers can work just as well, as long as they reduce the number of hailstones hitting your car. For example, you can park under a bridge (ensure you aren't a danger to other road users) or pull into a service station.
Stopping the Car
If you can't find a shelter, then just stop the car anywhere safe. The impact of the hailstones on your car will be reduced if the car is not moving. To understand this concept better, compare the damage caused when a car crashes into another stationary car with the damage caused when two moving cars crash into each other. The damage is greater in the second instance due to the combined velocities of the vehicles. This is what happens when you are driving in a hailstorm, especially if the stones are hitting your cat at an angle.
Using a Blanket to Reduce Hail Impact
Anything that softens the impact of the hailstones on your car reduces the size of the dents. Therefore, if you have anything in your car that you can use for this, take it out and use it to cover the car. Examples include towels, blankets, and even floor mats. They may not prevent hail damage, but they will absorb some of the forces of the stones and minimize damage to the paint. Do this early before the storm worsens because getting out of the car when big hailstones are falling may result in severe injuries.
Angling the Car in Relation to the Direction of the Hailstones
Dents and paint damage aren't the only car problems caused by hail; big stones can also crack the windows. In a typical car, the windshield is reinforced to withstand physical forces while the windows (or even the back glass) aren't. Therefore, angling the car so that the hail is not hitting the weaker glasses may also save you some damage.
Except for getting under a cover, all the other tips will just reduce the extent of the damage, but not prevent it completely. Seek prompt dent repair if you don't want to complicate the hail damage. For example, waiting for too long may make your car rust.