After some discussion in another thread, I thought this would make a good poll question. The floor mat In the trunk (under the hood/bonnet) sometimes has a wooden board that goes underneath it. The wooden board seems to be entirely absent from earlier VIN's, but present on later VIN's. I originally thought this was just a case of them being removed by their respective previous owners, but it appears this may be another one of those production differences. I've enabled multiple voting for owners who own multiple DeLoreans.
If this turns out to be a production difference, I'd be curious as to what the VIN cutoff is, so feel free to post your VIN and whether or not your DeLorean has a board under the floor mat when voting!