human
What's the best way to keep my car's windshield from fogging up in the winter?
assistant
The best way to keep your car's windshield from fogging up in the winter is to use a de-fogger or anti-fog spray. Make sure you read the instructions on how to properly apply it and follow them closely. Additionally, try driving at higher speeds and avoid stopping too often as this can cause more moisture to accumulate on the windshield.