Mumbai Metro Line 3 has pulled off something that hasn’t happened in a hundred years—it’s put Cuffe Parade back on the country’s real connectivity map. On February 20, a train rolled into Cuffe Parade, marking a historic moment. The entire stretch from Aarey JVLR to Cuffe Parade is now continuous, with all systems up and running. This is Mumbai’s most critical metro line, but it’s got some...