Waroff
As Chris points out there are two of them which immediately rules out anything connected with the SAB 80.
Certainly no Bre 730 either since this was a flying boat and much more modern in appearance than these two wrecks,which does not show any resemblance to flying boats at all.
As far as I goes this looks like composites of some sort, but I cannot really figure out why they were made. With such prominent turret on the neareast one, it really has to be that which is the purpose. This turret is at least partially gone on the second frame. Maybe the shot was taken late when their usefulness was gone and they are now ready to be scrapped for good. But a tank turret? Why put such a contraption on aeroplanes? There must have been an abundance of more suitable vehicles to use than aeroplane wrecks.
If the turret we see was the main issue, could really Germany have allowed let's say Vichy France to experiment with some kind of mock up like this and perhaps captured these hulks when finally invaded the territory? Did Germany itself experiment with turrets like this? I cannot recall anything like it though.
Since quite a lot of work must have gone into the "modification" I hardly think this is a work just for fun....
Cheers
Stig