Single Vehicle Family 2011

Practical Wisdom of a single vehicle family 2011
How does a family use one vehicle?
Three weeks ago my red truck died. My daughter and I are using HER car.
Remember asking mom and dad for the keys?
I now have to ask my daughter for the keys. It makes for interesting discussions between mother and daughter.
Vehicle sanity:
*Coordinate all calendars through December, update when necessary.
*The evening before discuss tomorrow and next week activities, be flexible.
*Plan grocery shopping trips including trips to farmer’s markets, Sam’s Club, bank, and library all enroot. (Serendipity- garage sales along the way)
Any pointers would be welcomed at this point!