The answer in today's $1 Million Subway Game Question was indeed Potential Mate One. Unfortunately, neither MAK nor Jeff complied fully with the rules of the game (i.e. they did not say why I chose PM One), so I'm afraid that neither of them will receive one million dollars tomorrow. Good try, gentlemen, and good luck next time.
MAK did point out that I was using the Subway Game without proper compensation for the creator of the game. Because this is true and by way of just compensation, I will offer him the alternate prize: a baseball cap and a sock.