Dirty windows in your car—especially a dirty windshield—can increase glare and lower visibility. Dead bugs, water spots, dust, and air pollutants can quickly build up on the outside. The insides of your car windows can also become soiled. So mix 3 parts water to 1 part white vinegar and apply with a clean rag to all your car windows. Then dry them with a cloth or paper towel. You’ll find you may have a clearer view and likely a safer drive.