I would be willing to put money on if you email this guy, he would ask for a shipping address to send the vehicle so that you could spend 5 days deciding whether or not you want it. After that time you would send money electronically. If you ask where it is actually located and if you can come actually drive it, he will tell you he works for the gov't or something and cannot get away to deal with selling his pride and joy.
Or something like that...
Seems to be the trend on craigslist anyway.
2001 4x4 Khaki Xterra