I couldn't find the proper old thread, so I'm starting a new one. According to a "Major's Minute" on XBL, you can download (be gifted, actually) a free Major Nelson signature edition Saleen Mustang S281E
by going to this blog on the Forza Motorsport
site and posting using your XBL id. I haven't gotten my car yet, but I've posted so hopefully that means I'm in line.