Wow... I was actually looking at that car too for my mother in law, and I was thinking it's pretty cheap for the shape it's in. Glad I did not waste any time going out there to take a look at it.
Good job on finding out about this scam, don't let up and make sure the AG follows up. Report them to thee Better Business Bureau as well. And we all should vote with our money and avoid BMW of Roxbury.