Please Help Us Upgrade Our Ride

I'm asking for help in getting a newer and roomier vehicle, not soely out of wanting, but also out of need. The vehicle that i have now was given to me after my grandfather's passing in 2007 and while a huge blessing at the time, has now become to small to accomodate everything that i need it for. As also with vehicles, time plus wear and tear have invaded many parts, including the engine, air condtioning system and radio. Only one window is rollable as the motors in the other three have quit forcing us to mount them and leave them unusable. It is also getting to small for my growing son who is special needs, which at times requires us to travel to see several docters. Up until now, this used to be the more reliable of our two vehicles, yet now i wonder how safe it is and we could really use help to get something safer. If we were able to we would ourselves, but i quit my job several years ago after my son was born to take care of him, leaving my husband the only onw working. though i have now started actively working online. We are asking for help, our credit is bad due to bad past decisions and though trying to fix it is, we are unable to finance at this time. Truthfully, we are asking for a miracle pretty much, but hope that there are those out that will feel the need to help us if possible.   X X X X