The plan is to build an autocross car as successful as the Scirocco.
Rare as in under done, leaking, and only paletable to some.
The hole appears to be the most lame attempt I have ever seen to do a half ass rust repair. It looks like the car had a vinyl top of some kind and the roof rusted along a seam. Now if I were going to do a poor rust repair, I would hit the spot with a grinder, lay down some bondo, sand and paint. This genius, decided the trick was to cut out the offending area(the big hole) then hammer the roof down to make a pocket for the bondo. Put in a layer of duct tape to fill the hole so the bondo did not just fall to the floor and cover one of the rust holes there. Then lay in two-three pounds of bondo and sand it out. Put on some paint and you are done.
The car has a nice shape, rear wheel drive and a motor with lots of potential. The only (BIG) issues are lots of rust and little support in the suspension department. Looks like tome to get a mill, lathe, and a TIG unit.