Okay, so my sister and I are in high school with totally different school and work schedules and both of my parents are gone all day at work and each drive their own cars. This leaves one car for my sister and I to share. I have been looking into buying a cheap used car for under $1000, but that means I spend half my months pay checks to keep up its insurance and maintenence. My parents aren't very supportive about me buying another car anyways because of the bad economy. We have agreed to each write our schedules down weekly and decide who gets the car when, but I was wondering if anyone knew an additional way for this whole thing to run smoothly. Thanks!