There seem to be two categories of unknown vehicles on the site. Those for which we have a decent picture but have not yet completely identified (but may identify with more searching) and those for which we have absolutely no chance of identifying as to make, model or year due to partial picture, blurred picture, home built customs (including some choppers), etc.

It would seem that we should split the unknown category into two parts:
"unidentified" for those cars that may still be identifed or that only have partial identification.

"unknown" for those cars that everyone has given up on.

We might even run a poll on the forum before we assign a car to "unknown". That may even get folks to visit the forum more.