As transportation become a essential part of daily life, human is now empowered to move in high speed unprecedentedly. However, human makes mistakes, such as inappropriate driver behaviour or wrong decision-making. One major cause of car accidents is drunk-driving. With self-driving car, people can rely on the computer and reduce all these human factors accident. Driving after drinking will no longer be a life threatening behaviour with the technology. To make self-driving car feasible, it is essential to train the self-driving car understand the surroundings, and this is based on object detection system with Computer Vision.