Help a foster child buy a car

Hi, my name is Hope. I have been in foster care for 13 years and will be turning 17 soon I will be aging out in a year and I need a way to get too and from school,work and doctor appointments their are not any programs to available to me to help foster kids who are aging out get cars and right now I live with my older sister who can't afford a car all by herself I have some money saved up and so does my sister but we can't quite do it all on our own anything you can contribute would be a huge help!