Before you wrongfully get scolded at or eye-rolled by other members here, most of the cars in GT6, including the Tommykaira ZZII, are Standard cars, or cars that were previous assets carried over from the previous GT games. Their interior is all black and "simplified" because it was not taken into account when the car was modeled and textured at the time for the corresponding game it came from.
Granted, some cars have went from being a Standard to a full-blown Premium in GT6, and some Standard cars have had their bodies and textures touched-up a bit, but their interiors are still "simplified".
