User blog comment:Mrob27/The Subway/@comment-5144400-20121007151030/@comment-4583259-20121009175452

Really, walking on ice is faster? I haven't noticed.

Hey, that's really cool. You're right, about 50% faster. I'm going to make the floors all ice now.

I guess I could say that I'm using the word "subway" in the British sense, which means "a tunnel under a road for use by pedestrians". In other words, a pedestrian underpass. That's what it meant in the early and mid 19th century, then the Americans began to use the term to refer to underground railroad tunnels in Boston and New York, around the turn of the century. (wow, nerdy, huh? :-)