Problem is you will never see those models in game or even photomode, since the only place you see them are scapes which is just car lod0 placed on a real picture. The real in game car model is soo much inferior to the models used in scape that its not even comparable. There is a reason why they removed the 360 camera view from 3d persone after the beta. The in game model uses LOD2 which doesn't look anything like LOD0, let me show you
Left is gameplay and right is photomode
And now look how much the scape model enhances over the photomode model and adds all the little details
left is photomode right is scape mode
And in modern cars with more round body work its even worse.
Left is gameplay right is photomode
And look at the difference between scape and photomode, look at the wheel missing the corvette detail entirely.
Photomode left scape mode right
I really hope they use the highest LOD this time in GT7 because it really doesn't look good outside the cockpit view which is great. They create one of the best car models and put soo much time and effort in them just to use them in scapes. The PS5 is more than powerfull enough to handle those models in game.