I observed that the finished product pricing does not yet work or I am not understanding something. I can set the price at any level and sell the cars like hotcakes. Unimplmented feature? All else going well, enjoy playing around with this. Hoping this all goes very well as I am a process type game nerd.

You can't set the car pricing at any level. Once you get going a bit and rival companies research tech, the fewer 'very rare' features you have in your cars, versus other companies, the lower you can mark-up your cars, else you generate a stockpile and lose lots of money.
I even was selling my cars at one piont, at -15%; that is, 15% below market, just to move inventory.

however if you stay atop of the technologies, you can generally keep a 10 - 20% mark up, for a time. Though that will not last either. I'm hovering at a 5 - 10% mark up now, as my technology tree is completed and the advanced manucacturing and such are what's left.

To be competited in late game means getting cars out fast and cheap, while still retaining quality.