If you live less than a mile from your child's school you should try walking when the weather is good. My daughter's middle school is about 3/4 mile from our house, but I'm always surprised at how many kids who live roughly the same distance are driven to school. Sometimes we're running late, or it's raining, and we drive. But often, we walk.
If we walk we have to leave the house about 10 minutes earlier in the morning. But we save a little gasoline, it's great exercise, we get fresh air, and it gives us a chance to talk. I figure that if we walk to school three mornings a week, thirty-six weeks a year, that's 54 miles less driving and about 15 hours more conversation with my daughter. Well worth it. The only downside is that I have to leave her a short block from the school so that no one sees us together!! (Why is being seen with a parent so humiliating when you're in middle school??)