Dhaka is the capital of Bangladesh and also a listed megacity in world. Despite being a environmentally friendly city, it has become a city of pollution, a city of traffic jam etc. The reason behind traffic jam seems to be dwellers like to travel through car. A megacity should have a well-established and efficient Public Transportation system. A megacity should have been Carbon free city. Dhaka is different. Its needed to explore what are the factors that pushes the dwellers to use car instead of public transport.