You're in a hurry. You scrape the windshield and surrounding windows, and you're on your way. However, you missed something.

Use this as a reminder to clean off your entire vehicle. You wouldn't want to be the one barreling down the highway only to receive a fresh (and likely hard) sheet of snow/ice. Even the small bits carry weight. Yes, it's inconvenient, but will only take you 2-3 minutes.