Yeah, I had some time on my hands (kinda rare these days) so I sent them a short note asking if they were aware they might be violating copyright and trademark laws.
This is what they wrote back:
"Allan:
Thanks for the legal tip. We did consider that when we first started building the site -- that's why we drew our own subway map instead of lifting theirs. I suppose they could argue that the color scheme is the same, or that we used the same font to create the station logos. But I think we're too small (and have zero money) to bother sending a legal team after. At least I hope so.
Thanks for visiting!
-- Mike"
For their sake I hope they are right.