Actually the task is quite easy, or at least it is the way I'm developing it.
I start from the last puzzle of the last page of a given year and proceed backwards towards the 1st. In case one of the old ones is updated along the process, it will be encountered at the end and won't be missed.
Here's a sample:
You have here in each column:
Maker-Model-Cross reference-year-tag about the builder-tag about the car-....
There are then several columns that I'll use to sort the lists at the end: one for the mechanicals (and I can list all the mini-based, VW-based and so on), one about the wheels (3-wheelers, 6-wheelers, etc) and a couple more for a lot of different tags (advertising car, kit car, rendering, replica, amphibious, etc etc.)
Keep in mind that this is what I decided for my project, once I decided to proceed alone for myself: I put there what I need for my other project (the neverending list).
If I'm no longer alone on that, we can decide together what is interesting and what is not, which tags are to be used and which ones are not.