Yesterday I went to town, to the Fort area—and came back, all in a span of three hours thanks to the local “fast train”. Even in the non rush hours, the trains were full. Which is why this new train corridor seems interesting—Colaba Bandra SEEPZ…all of this 33.5 km underground. They forecast 13 lac passengers/ day by 2016. Given the terrain differences-- the city is a chain of islands joined up, and part marsh land, part sea—  construction would be quite challenging, I think. But anything that takes pressure off Western Railway and the expressways would be a lifesaver.