If you think it's still in your state, you could try the requesting the info from the DMV. Or maybe that only works in the movies...
Im praying the insurance lady still has that VIN way back in the deleted folders somewhere.
If I may ask, what's special about it? I mean I know the ad says "there is only one", but they did make a lot of them. Get another and make it look like the first. (or better)
Stone put an add in your local paper and maybe he will respond. TC
Go to the dmv and pull the fire alarm. When they run out of the building jump over the counter and log in. Go to the page that says "Enter VIN" and type it in.
Or, you could always use the desperado approach, but they might try to call it a hostage crisis.