<human>: What is the best way to keep my car cool during hot summer days?
<bot>: The best way to keep your car cool during hot summer days is to make sure you have a window open slightly and use air conditioning. If possible, park in an area that has plenty of shade or move your car every few hours to prevent overheating. You can also try running the fan on low speed for a few minutes before driving off to help circulate air around your vehicle. Additionally, keeping the windows up when stopped at traffic lights can help reduce the temperature inside the car.