In terms of the car design, I suggest whether the game can design the appearance by itself?
Can some basic Chinesization be added into the development version, which maybe conducive to Chinese players to put forward some suggestions.And the completely Chinesized version can be released officially for the accumulation of popularity at the same time. 
The players can be allowed to design the car logo by themselves.
M&A, agents, stocks, bidding tasks of government forces, and random events can be added to the tycoon elements.
All a car needs is an air vent to cool the engine, if you don’t feel like designing it’s the simplest solution, having the game designing the car seems like a hard thing to code