pretty sure the graphics - texture settings should be the other way around although i don't think it's gonna change anything if you zoom out from very far
It's fixable depending on the attitude of the modder
Many are lazy in this regard unfortunately and theres a lot of mods where things have been skipped like for example using the autogenerated hitbox model for LOD2 which is used for shadows and cars further away from camera like in your picture.
This is true(although i wouldnt say it should be completely opposite), the mip bias slider for objects and walls affects the car models specifically. Multiplayer speedup option might affect it too but dunno since it is at 0