Get 4 of
THESE with shackles to go with the load. I know its overkill by a lot but fucking people do some stupid ass things. Get 1" thick by 6" wide and the width of the car by one foot more on each side. Cut holes on the steel to correspond with the frame holes OR create 1" holes in the frame of the car to accept ONLY GRADE 8 bolts that are 3/4" and however long. Then cut or drill holes in the ends of the steel to accommodate the shackles. Hang accordingly. May need a total of 12 shackles for attaching to the I beams in the ceiling.