Help me get a safe and reliable vehicle fund

I'm not really sure how to put this in words but here it goes:

I am a hardworking single mother of two small children.  I work 40+ hours a week and go to college full time, but at the moment I still live paycheck to paycheck.  I am trying very hard to live without public assistance and make it on my own, but it's hard. I live in a small town that doesn't offer much public transportation, the only thing that is offered is a single bus that only runs from 7am - 5pm.  Don't get me wrong if I worked during those hours I would use this too my advantage, but being I work from 2pm - 11pm and still have to pick up my children from daycare afterwards this would not work for me. The vehicle I am driving was made in the very early 90's, has no heat, and feels like the wheels could roll of at any given time.  Honestly I dont think it will make it another winter.  This is why I am asking for your help because with  snow  and freezing temperatures arising  I have no choice but to ask for help! I don't know when I'll have enough money to buy a car outright  and know that with my current financial situation  I could never afford full coverage insurance if I were able to get financing.  If this car goes out on me I don't know how I will get to work, school, or even get my kids to school; which will result in me loosing my job, house, everything and I am just really in hopes of not having to go thru this.  So please if anybody can help me raise enough money to find a safe,  realiable, heated vehicle for me and my children for these winter months up ahead, nothing fancy just something that runs and is heated. My children and I would deeply appreciate it, every dollar counts and if I don't reach my goal to get a more safe and reliable vehicle I will put the donations that are raised towards improving the car I currently have.