At the end of the game, I produced eleven different cars. The last factory was built to produce the ultracheap cars for the Archanan market, which started producing cars in about 2006. After that, I could only spend money on improving the current factories, because the financial crisis lowered demand for nearly all markets segments. I still ended up with 122,7 billion dollars in the bank nonetheless at the end of the game.
If it was possible to have two or more factories for the same car model, I would probably needed a second car & engine factory for the delivery segments + heavy utility and a second pair of factories for the cheap Archana car. Even a fully upgraded huge factory can’t make the numbers for those segments on their own at the end of the game.
I don’t remember the exact campaign setup, because I started the attempt in May. What I do remember, is that the company started out in Fruinia, with about 20-23 points technology and no special talented employees. The starting amount of cash was 800-900 million USD, but I don’t remember the desirability and markup setting. The difficulty was probably between 1.40-1.60.
I spread the tech points over many different techs to have lower R&D costs at the later stages of the game, which is why I spent only spent 65 billion on R&D over the whole course of the game. The only techs on which I didn’t tech points or money on were forced induction, safety and brakes.