Cross-posted to GeekyTraveller.
Gwendolyn sent along this nifty site, whose URL tells the whole story:
Simply put, I decided that it’d be pretty cool to build this website so you can put subway maps onto your iPod Photo. As I write this, I’ve only got one city up so far–well, almost. I skipped Staten Island. Do people actually ride that subway?
Nifty. They even have Vancouver sorted now. If I only had an iPod Photo.