Get to know you neighbors who have cars =). Yesterday I completely spaced out on a dentist appointment and, by the time I remembered, I had 15 minutes to get there. They charge for no-shows. It takes me 30 minutes to bike there, maybe 20 if I can catch a tailwind and my knees aren't complaining. So I ran to a neighbor and begged to use her car. No problem. On the way back, I stopped and bought her some flowers. She was happy, and would be glad to lend the car anytime. I saved a rather large no-show fee. Crap happens and you can't always be prepared (although I now have multiple alarms set for my next dentist appointment). Yeah, it wasn't a car-free moment, but every other day is, so I'm fine with it. Check with your neighbors and see if you can work out an occasional car share.