How much real information does this guy have on you? That's the question to ask before baiting him. He most likely does have your email addy. Unless you are using a secure email service like Gmail that doesn't reveal your IP# it is possible, if you make him mad enough he could find out who you are and where you live from that. Even though
he most likely isn't in the US, he may have accomplices who are. Make him angry enough by baiting him and you could find one of these guys on your doorstep some evening.
Also baiting a check fraud scammer isn't very easy. Not much to do except take his check and not send the car. I doubt you will get a second round after that. Even that can be dangerous because in some jurisdictions just possessing a counterfeit check is a crime.
My advice would be to drop this guy completely and check out Eater and some of the other baiting websites. Eater offers a mentor program where you are given an experienced baiter to help you learn the ropes of baiting. Once you have a mentor pick up a good 419 scam and bait that. Those can be drawn out for months (sometimes even years) and drive a scammer crazy with delays, fake WU transfers and forms to fill out.