A concept car is a prototype car or a car design that has yet implemented as a mass production model. It is often crafted with the latest styling and/or technology. They are commonly displayed at motor shows to elicit public reaction to new designs. Think of it this way, you wouldn’t want to invest in something that people may not like. But if you want to produce an innovative idea, you will need reassurance that it will sell. For the sake of practicality, numerous changes are made into a design before it is a production vehicle.