Colin takes on the Glasgow underground in this murky video clip. A nice wager, 'though not as daft as the challenge undertaken by the protagonist in Tunnel Vision, Keith Lowe's neatly-done book about a tube buff on his wedding eve. I still have never taken the Eurostar, which courses through the Chunnel, certainly one of the greatest engineering accomplishments of the twentieth.
After reading about Colin's challenge, I thought, briefly, that something similar might be amusing to try with MUNI. But the biggest obstacle is overcoming the throngs entering and exiting each subway station; this, presumably, is why Colin chose an advanced hour for his go. But MUNI does not operate at the late hours any longer.