What we get now is definetly not the lod0
"standart" cars have only 1 lod, I am sure, because they were imported from ps2 era (gt3\gt4)
Premium cars have at least 3 levels ov detail.
I"ve played gt5 and gt6 a lot and I'm sure about what I"m talking about;)
So, lod 0 should be photomode lod, it has both interior and exterior in amazing detail (it is much more detailed, than forza 5, you can see the difference on screenshots)
Alfa romeo on screenshot from polyphony digital presentation is real lod0
Next one-track photomode(not in photomode location) you can see a little difference in detail
Next-ingame opponents on various distances, they should have some lod's
Tessellation doesn't plays any role here, because gt5 had the same detail without it
Also, if you will look at the screenshots, of course you will see epic detail, where every little part, every button is highly dtailed
They are just hidden somewhere, I am sure...
About textures with strange alpha layers- Polyphony digital always had them since gt3 for some reaso (mabye because of non-pc platform)
I saw it first time while ripping models from gtpsp, cars have strange alpha layers, and sometimes they don't have them at all.
Imagene yourself texture, which is a 100% blue cube, it have only one colour and nothing like any layers or words, but in the game it turns to sponsor stickers on cars somehow O_o
So, they always had strange formats, codes and powerful protection.
Highest lod should be hidden somewhere, I'm 100% sure