Yes, lightning does strike cars, but you are generally safe inside one. The metal frame of a car acts as a Faraday cage, directing the electrical current from a lightning strike around the occupants and into the ground. The key to safety is that you are not in contact with any part of the metal frame. This means you should avoid leaning on doors, keeping your hands on metal window frames, or using plugged-in electronic devices.
While the vehicle's body provides protection, the strike can still cause significant damage. The immense electrical surge can disable the car's electronics, explode tires, and melt antennas. It's the rubber tires, a common misconception, that do not provide protection; it's the conductive metal shell. Modern cars with more composite materials are still safe because they contain a full metal safety cage.
If you are caught in a thunderstorm, the safest action is to pull over safely, away from tall objects like trees or light poles. Turn off the engine, place your hands in your lap, and wait for the storm to pass. Do not touch the radio, steering column, or other console components.
| Protective Factor | Why It Matters | Potential Damage from a Strike |
|---|
| Metal Frame (Faraday Cage) | Conducts current around the passenger compartment. | Fried Electronics: Can destroy the engine control unit (ECU), infotainment system, and sensors. |
| Windows Rolled Up | Maintains the integrity of the protective shell. | Tire Damage: Extreme heat can cause tires to blow out. |
| Hands in Lap | Prevents contact with conductive surfaces. | Exterior Damage: Can leave scorch marks, melt plastic, and damage the antenna. |
| Parked Away from Trees | Reduces risk of a side flash from a nearby strike. | Electrical System Failure: Total loss of battery and alternator function. |
