Blue Monday have published an interview with Markus Wojcek, about the upcoming strategy game Car Tycoon. Heres a bit:
What kind of feedback do city maps give to the player?
He can directly watch the success of his company and of his competitors on the map. He can see in real-time how the cars are selling and who is strong in which city. Another point the player has to think of is the distance of delivery from the factories to the selling points and the time it takes until the cars can be sold.