MUMBAI, Sept. 24 -- Five years after Mumbai, the financial capital of India, got its first Metro rail line - a mere 11.4-km line that took six years to build - the city is in the middle of a transformation, at least to improve its transportation mode. With six Metro lines or nearly 140km of Metro corridor under-construction to connect Mumbai and the Mumbai Metropolitan Region (MMR), the Bharatiya Janata Party-led state government's infrastructure push is evident....