I believe vehicles represent ministries.  The vehicles in the car carrier were on fire because, as we have all seen through the glass darkly, our doctrine has been flawed.  These ministries are being run out of town, so to speak to make way for new ones God is about to assign.  The houses are the Christian's perspective on religious teaching, what they've been taught from the flaming vehicles.  We are into revelation now and the Lord is revealing truths that until now have been hidden.   You being in an upstairs version of your home shows you are in the "upper room" just as the apostles were when the Holy Spirit descended.  The ladies carried the  depression vehicle through your open door showing you are being given an opportunity for a ministry during an upcoming time of depression in our nation.  I think them telling you to keep it safe means you are to be flexible and teachable to receive new revelations and instruction from God to help and teach
 others during the coming difficult time.  I read the color brown means humility and compassion.  You will be well equipped because you will receive from God all you need during His visitation of you in the "upper room".  Not sure why it was ladies that carried it.   I've prayed for your husband, hope he is improving.

Karen