"I still can't quite get how a car worth even $3k gets totaled because the interior got wet?"
Again . . . all depends on just what he titled and insured his car as!
Any car at all, once it gets wet, is considered "water damaged" and raises all sorts of issues. Not simply the seats and carpets, but the door panels and behind the dash board. They factor in possibly unseen damage to the wiring, clouded gauges, moisture in the heating and air conditioning., and especially MOLD ! ! !
Insurance companies are frightened to DEATH of mold and the health issues that go along with it. To their way of thinking, it's better in the long run to just axe the car. Then EVERYTHING goes away and they just "adjust" the owner's insurance rates over the next two or three years to cover their loss.
BUT . . . was the car insured as a VW OR 356 PORSCHE ? ? You can't find genuine rubber mats for any 356 these days, factory sound insulation, wooden floor panels, I mean an original pair of 356 kick panel speaker trim rings and inserts is almost $500 alone.
Then there's the mold issue that pops up when his kids begin school, allergies and blood irregularities "possibly" traced to mold spore inhalation and, "Oh yeah, remember when the car got wet . . . " and now an "as seen on TV" lawyer is chasing down the repair records to see if the car was investigated by and "sealed" by a Mold Abatement Expert and what was HIS EPA certificate number and . . .
BUT . . . the payout makes sense or is nonsense depending on just what was insured.