If you are a member of a church, you might see if they could help with rides. Or if not a member, you might still contact a nearby congregation to see if they could help you out. Churches are often rather amazing at organizing transportation, meal assistance, etc. but you have to be willing to let them know you have a need.

There might also be other non-profit organizations in your area that can either help with financial assistance or transportation assistance. I know we have transportation for the elderly and those needed transport just to doctors, etc. that is fairly low cost, and I think they even can work on a sliding scale if needed.