As described in the book, owners/transporters are warned against towing a DeLorean car backwards without securing the rear louvre/sunshade in place. These photos (courtesy of Josh Quellhorst) illustrate this quite plainly.
In addition to obvious broken louvre (~$500 new), BOTH the stainless quarter panels and the t-panel are damaged. A good stainless repair specialist should be able to fix these, but it won't come cheap and it's likely repairs will come close to the same cost as replacement. Nevertheless, this could have been much worse - other incidents like this have resulted in damage to the tops of the doors, windshield and hood, as well. Thankfully, this wasn't Josh's car, but his photos illustrate quite plainly how much damage can be caused by not exercising the proper precautions when transporting a DeLorean. Thanks for allowing me to share these photos, Josh!
As mentioned in The Illustrated Buyer's Guide to DeLorean Automobiles, the original DMC created a special "hand book" to explain and illustrate the special handling requirements of the DeLorean car as opposed to other "regular" cars.
I've only seen a couple of these books over the years, and they appear to be fairly rare. I'm grateful to The DeLorean Museum for allowing me to scan and post this PDF (3.5mb) of the book.