Well this is my first post here. Long time lurker and Z 06 Vette driver. I got stiffed more than once by dealers. It sucks.
What you need to do is tell the dealer you are going to consider filing charges against him for identity theft. Use Kentucky statue KRS 514.160 1 B and 1 E
http://www.lrc.ky.gov/KRS/514-00/160.PDF
Now I am far from a legal expert and it is a stretch but it could be you could call their bluff on this. Also contact the state consumer affairs department. Contact GM corporate and demand your name and address be removed from that vehicles order. And last but not least since GM is deep into the feds for money contact your representative and senators office. Explain they are using your name and address to obtain a vehicle as a sold order. Nothing would thrill GM corporate more than to know some politician would be squealing about this at a hearing.