The structure itself runs slightly fiddly. The struts which span the softbox are - contrary to the official instructions from the Internet - not of metal but of plastic. I was concerned that they break when bent, this was fortunately not the case. However, a stretch tape tab is torn - repaired using a staple gun again - and two bars are bent and frayed at the end by the stress - put with a lighter back into shape.
I am glad that my car is large enough to carry the boxes in one piece, because off and rebuild it - no, must not be again.
Otherwise highly recommended.