1. Open the Windows: Start by opening all the windows as soon as you get into the car. This allows hot air trapped inside to escape and cooler air to flow in.

2. Turn on the Fans: Set your car's fan to the highest setting and aim the vents towards the windows. This helps push the hot air out faster and brings in fresh air.

3. Drive for a Few Minutes: With the windows open, drive for a few minutes to maximize airflow through the car. The movement helps to quickly expel hot air and replace it with cooler outside air.

4. Use the Rear Windows: If your car has rear windows, open them slightly. This creates a draft effect, pulling hot air out of the rear of the vehicle while cooler air enters through the front windows.

5. Utilize Air Vents: After a few minutes, close the windows and switch your air vents to fresh air mode instead of recirculation. This will draw in outside air, which is cooler than the stifling hot air initially inside your car.

6. Activate the Sunroof: If you have a sunroof, open it to allow hot air to rise and escape. Even slightly cracking the sunroof can significantly improve ventilation.

7. Install Vent Visors: Consider installing vent visors on your windows. These allow you to keep the windows slightly open without letting rain or excessive wind inside, providing continuous ventilation even when parked.

8. Use the AC Wisely: Once the hot air has been expelled, turn on the air conditioning to further cool down the interior. Start with a lower temperature setting and increase gradually as needed.