Transportation Required!

My 26 year old son, Chad is moving home to live with me as his shared living provider on Wednesday, October 29th. Chad has cerebral palsy, spastic quadrapalegia along with many other medical issues. He is wheelchair bound and has a gtube which he receives all of his nutrition and medications through. He has been away from home for many years and having him come back home is a dream come true. For us transportation is crucial. I have found a van, now I need to find a way to buy it. The woman who currently owns the van has allowed me to make two months worth of payments and use the van while I figure out how I can come up with the money to buy it so that I have transportation for Chad. So here I am. If you can help us it would be greatly appreciated.