India, Oct. 20 -- The long-maligned but hard to repress spirit of Mumbai is on the upswing these days. After a four billion dollar infra upgrade and with more projects in the pipeline, it's hard not to feel optimistic about the megapolis. The coastal road and the now-complete Metro 3 have bridged the gap between the western suburbs and south Mumbai, paving the way for the potential rejuvenation of the city's original business district, Nariman Point. On the eastern side, the trans-harbour sealink, the new airport, and the upcoming metro line could lead to the potential of Navi Mumbai being released 50 years after the satellite city was conceived.

An additional estimated $25 billion is expected to be spent in the next five years on the se...