About Google checkout...........what should I do!?

1) threaten to file a lawsuit. (you probably will anyways) 2) contact your bank about reversing the wire transfer, might be possible depending on amount of time passed. 3) contact you local police, the sooner the better. You police department should have a non-emergency number use that don't just call 911 because thats for people in trouble. 4) you need to realize your a target of a scam, you should never buy cars from out of state, especially with wire transfer, wire transfers tend to mark a scam. 5) If you have their number its probably a pre-paid cell phone untraceable, but since you said the wire transfer was send to a bank account the police should be able to get his/her info from that, and they probably arrest them. Hopefully you did not loose too much, It must suck for this to happen, but it happens to the best of us. I always wonder why people do this, hurting innocent people, its a shame, hopefully you can stop them, so they won't scam anyone else.