My idea: Only allow one model/trim, from manufacturer, per each category.
Different Models and Trims are for filling a certain need anyways. So it would be simple, logical and realistic.
Here’s Ford’s example. They are all Mondeo’s, they are all 4door sedans, they are all petrol engines and they are all from 2014:
1.0 Ecoboost 125hp
1.5 Ecoboost 160hp
1.5 Ecoboost 160hp Automatic
2.0 Ecoboost 203hp
2.0 Ecoboost 240hp
So that’s the real world example. Where would you fit all of those listed above, in current categories shown in the video, without two or more of them falling in the same category?
That said, we need more categories. Maybe with more emphasis on prize?
Also, the game should start with less categories, and that number would increase when the time progresses.
EDIT: Added the fact that those cars listed are also all petrol engines.