The principles behind the auto industry are primarily driven by the last motive. To pump up the price for some shitty upgrade that not many really want. It's the same core, with a few upgrades that are super cheap to manufacture. Like a dashboard change or change a knob to a button etc.

It's like selling a new iPhone with just a few changes to some superficial apps such as I donno, Numbers.

Agree with you on a modular car where you just let people customise and build whatever the heck they want. I even think you should be able to customize a 2 seater v/s a 4/5 seater with plenty of options.