GM getting desperate: sending spam email?

I think in these uncertain economic times, GM is getting desperate and buying DVDs full of email addresses which were obtained by unscrupulous means. Of course I'm just guessing here, because I just got this email from "the professionals at GMC":

I have no idea how they got my email address. Someone sold it to them, and I'd like to know who, but unfortunately, I didn't add a label to my email address while signing up for whichever service sold my email address (like emailaddy+label@gmail.com) so I don't know who did it. Pretty annoying though.
Is GM really so desperate that they have to resort to sending out unsolicited emails to guys who aren't even remotely interested in buying a piece of crap, poorly built American vehicle? I think it's a possibility considering they are on the brink of bankruptcy.