Hi,
It is indeed possible that there are some errors, but it is not always possible to list very accurately all car makes & models with the same generic system.
In addition to the fact that we do not especially have members on the site specialized in each make (and I am not sure that anyone really checked the coherence of the Lotus listing recently).

What we call "chassis" on the site is more a multi-purpose "common manufacturer code/reference" than only a chassis code. The "model" is the commercial name.
So for the Esprit, Elan, etc., it is normal to have that name as model and the Type as "chassis": it is what the latter field was made for.

For the older ones and the race cars however I am not sure what is the best way to list all these.
If you have more precise suggestions (examples) of what should changed, these would be welcome.