Transportation plays a decisive factor in determining the health of a city. “Reformation and Transformation of Mobility in India’s Economic Capital” aims at understanding the evolution of the Mumbai Metropolitan Region and the implications of shift in the transport behaviour on the mobility infrastructure of the city as well at personal, social, and environmental levels. It provides with a brief insight of challenges that are faced by all the stakeholder. This case study primarily focuses on the metro project that is about to become a major engineering achievement for the city. The other aim of this case study is to highlight the importance of timely completion of major infrastructure projects and the economic costs associated with the failure to do so.