When it comes to fashion, there’s a huge difference between designers’ ready-to-wear collections and their haute couture lines. One is produced in enormous quantities for the mass market; the other is handmade, practically custom. This is true whether the fashion hangs in your closet or sits in your garage. Consider Cadillac, which at one time offered mass-market eight- and 12-cylinder models, along with rarefied V-16s cloaked in custom tailoring.
This is a companion discussion topic for the original entry at https://www.hagerty.com/articles-videos/articles/2018/10/04/cadillacs-love-for-pininfarina