About the MSP that was damaged at the dealership. The car does have to be sold as a used car, although damage wasnt enough to sell as salvaged...in which case a autherized dealership cannot sell cars/trucks/vans/whatevers unless they have a clean title.
A good friend of mine bought a car from a dealership about an hour away, we got home and for s**** and giggles car faxed it. Well turns out it had a slavaged title, and he told the dealership(hoping to get them to lower the price he bought it for) and they actually had to take it back and resend the deal. They ended up selling it at auction, and he bought another car.
Anyways, as far as a paper work trail on that car. You better believe there is one, not with insurance, or police but with Mazda and the dealership. Anytime you buy a car always ask if it has had any sort of damage done to it, and tell them you want all paper work envovled with that car. You have a right to see ALL papers except for thier actual purchase papers from the manfacturer. In this case you would be able to see that infact the car door had to be replaced, and it was damaged, cause it will have papers with an order to get it replaced than fixed.
Also, a lot of the times if a car is damamged to that extent on shipping(replacing a door is some fair amount of damage) they will send the car back. A friend of mine worked at a dealership(Lithia if anyone is familiar with em) and he was in the recieving department I guess you could say. He dealt with this sorta thing...they send cars back if they get them damaged beyond a simple fix.
So yea, that MSP has to be sold as used now, the only time I can see all this not applying is on electonics...radio and such.
EDIT:Actually I think the car would be sold as "Damaged" and it would have a listing of what was damaged on it. In turn they would just drop the price on it. I was gonna buy an 01 Civic LX and I found out the sliding roof had to be replaced, they actually dropped 500 bucks off the total of the car..I didnt get the car anyways in the end, but still...they dropped the price.