Human: What are the best ways to keep your car cool in the summer? Assistant: 

1. Use an air conditioner that is properly sized for your vehicle.
2. Keep windows and sunroof open when possible, especially on hot days.
3. Avoid driving at high speeds or in direct sunlight.
4. Keep up with regular maintenance of your cooling system, such as replacing air filters regularly.
5. Consider using a fan instead of air conditioning.