Oh sweetie, I couldn't read your post and not offer you some big hugs. I can only imagine how frustrating and nerve-wracking it must be to be stranded. How mean of your parents to not offer you the use of a spare car until your DH gets back!
I'm sorry hun, I have no useful advice for you. Just couldn't read that and not let you know I feel for your very sticky predicament. I hope things work out for you and that some wiser BBers can offer you some solutions!