You are a car maker and you want to make car that matches your client’s preference. And that is the reason you are well known because people know that you can do what they like in a car.
Design a car for specific people. Each person has their own preference and that is what you need to do in this game. Give them what they want so that they would be a happy client. Your goal is to make your client contented so you need to design and drive it later to prove that the car is fully functioning. You will be presented with different clients that has different expectations.