City that 'never' sleeps

Does title indicative enough that I am talking about Mumbai? City which is known for not sleeping at all. Just wondering when, how, what, who made this statement? Because today was second time I saw this city sleeping. If Mumbai is CST Railway station, or a major market place like Dadar then what is being said is true.

Two months back I went to Mumbai International Airport to receive my friend who had connecting flight to Bangalore at around 3 AM. After his flight took off I was actually thinking of travelling back home, but deserted roads at Santacruz made me wait till 5 AM. Even at 5 AM roads were empty, at around 5:30 day was seemed to be on a roll.
and today it took only 45-50 mins for me to drive till office from home, which in a daytime nothing less than 2.5-3 hours. How is it possible if this city is not sleeping? My journeys till date have happened most of the times in the night and I can tell for sure that any place which can be vaguely defined as town is up by 5:30 or 6 in the morning. Not that I am against what is being said, rather I feel it is incomplete that this is the only city. I guess new growing silicon valleys of India are more or less on the edge of being insomniac.
From the time I have come here, its not new to be in office till it becomes dark outside. But today I reached office when it was dark outside, Before 6 AM. Tooooo much!

An ear to ear smile on my face while telling people that I reached office in 45 mins is indeed a reason to go public sharing this joy :)