I have to admit, the car was not molly coddled and although was used as a second car to his Giulietta, it was kept outside and driven all year round and in all conditions. He's had 33s, 146s etc as main cars and none rusted like this! It had its floorpans welded a couple of years ago and none of this rust was noted, must have got a lot worse fairly recently.
It was slightly rusty when purchased and we felt that making good wasn't worth the money, and rust proofing would just apply underseal over rust anyway, possibly making it worse. We knew it was bad, as the car has simply been driven into the ground, but still very sad though!