I worked for years making stainless steel kitchen equipment and my skills are beyond what would be needed to repair body damage on the Cybertruck, as I used to make sinks and other curved and polished surfaces.
First off, the general repairability. Easy, especially because the body is basically flat. You could cut the damage out, make a new piece and tig weld it in. It looks like one brake/kink/crease is all that would be needed, if any at all. Grinding the weld down may require some skill depending on the finish desired.
Second, scratches. This all depends on the finish of the truck. Most people think of kitchen stainless steel, and that is grained cosmetically. Look at a stainless fridge, there is grain. When grained stainless scratches, it can be polished out by a skilled person, but it is not especially hard or time consuming, even easier on flat surfaces. Fine scratches can be blended with a Scotch pad, always going with the grain.
However, if the stainless is not grained rather swirled, well then any scratch could be perfectly removed in about 60 seconds with a 30$ tool, this includes fairly deep scratches.
How great would that be, no paint work, no corrosion concerns, no blending, basically hit it with a palm sander.
What I don't know is exactly what is being the stainless skin. Are there stainless ribs, gussets, etc., that would complicate repairs?
To me, besides weight, stainless is kind of the dream material. It is very workable, repairable, is everything-proof.
The Discovery Channel had a series about what would happen if humans went extinct. They concluded that the last evidence of humanity would be a stainless steel sink sitting in a swamp 50 millions years later.
So, if you have a swirl finish, any cosmetic scratching is soooo easily and cheaply fixed.
If you have a polished/grain finish, scratches are less easily repaired, but still far more easy that dealing with paint.
For body/exoskeleton damage, as long as there is are not complex structures behind the damage, it is very doable.
