Position 4 (3) - Vehicle Line:

  1 = Model S
  3 = Model Y
  7 = Model X
  F = Model 3

CAP codes are white space sensitive, they often have leading whitespaces. So you need to store " PINGPONG", but if you store "PINGPONG" then you are going to be a in world of hurt.

Then each manufacturer has their own code (e.g BMW has IVS, Stellantis has titre and so on).

Then there are mapping files between CAP and manufacturer specific code.

Then manufacturers often need to quickly react to new models being available so you get things like overrides, which is literally a string replace "OO" with "XX" and that makes it into a "electric diesel".

Then along side CAP codes, you other industry codes (e.g. Glasses, HPI).

And they _ALL_ need to interact with each other.

It sounds like a fun problem to solve, it isn't. You basically become a glorified data mangler.