In a hot and sunny day, the surrounding temperature may raise very high up to 33 ℃ and sometimes more. When it comes to automobiles, felt very hot and burning inside car especially park under the roofless parking. This phenomenon is unfortunately can affect our health and it has to be improved or more efficiently eliminate it. How can we reduce and improve the temperature inside of the car? Throughout this research, the interior car temperature is targeted to reduce to a comfort temperature which is not hazardous temperature to the human. The current cooling system of a car was studied and the gap analysis was identified towards the current existing devices. This research provides data of the car inside temperature during a hot day which is approximate twice of the surrounding temperature. At the end of this research paper, the best design is selected by using Computational Fluid Dynamics (CFD) results and Morphological Analysis. The results were obtained by the CFD analysis in order to see and decide which are the best design concepts and to achieve the best air ventilation. Therefore, in order to reduce the car interior temperature, the proposal is to propose the product development process and develop a device which helps the air circulation inside of a car. It can be applied to different car types in terms of vehicle powertrains, classes or sizes.