It seems like you got scammed by a professional. I'd put up a notice and see if anyone else got scammed in the same way you did. This guy definitely thought this through and it is unlikely that your his only victim.
Write down everything you can remember about him, like height, skin color, hair etc. Also try to remember everything about the car, color, model, make etc. The more information you have the more likely you are of finding him and recognizing him if you see him.
In most cases the cops are useless, file a police report, but after that I'd take the matter into my own hands. Go to your local sports store and pickup a wood baseball bat. It's gonna come in handy 🙂