DH and I have been a one-car family since before we were married...just passed the four year mark. This means that one of us is usually carless!
It was VERY stressful the first six months, until we learned how to plan ahead, like Eden mentioned. We have to email each other at the beginning of each week so that we can check each other's schedule throughout the week. I've had to adjust to not being able to do anything I want whenever I want. I still get to do whatever I want, but it might have to be at a different time. It took a long time to un-learn that instant gratification.
This 2-mile deal is a great idea.
2007 Trek 5000
2009 Jamis Coda
1972 Schwinn Suburban
"I rejoice every time I see a woman ride by on a bike. It gives her a feeling of self-reliance and independence the moment she takes her seat; and away she goes, the picture of untrammelled womanhood."
Susan B. Anthony, 1896