In the article Racing to the Dealership:How Motorsports Affect Our Cars it talks about how lots of cars are designed by looking at race cars. Sports cars are a major industry in the U.S. Every car manufacturer has a sports car that they sell. In this article it talks about when designing a car they look at the suspension, the power and make up the engines, the overall design of the car. Which I think this is great because you can use these race cars to market and sell your much simpler car. If one kind of brand is doing well on the race track then that will help your sells. Another thing that manufacturers are doing is bring back the "name" of some popular muscle cars that they discontinued. For some car enthusiast this great and they will buy it just for the name alone.