Advertising in strange places

I’m in Boston, sightseeing, before the start of Business of Software 2008. I was on the T – Boston’s subway – travelling between Harvard and South Station, when I noticed an unusual thing.

The train was going some 30 miles per hour. I looked outside and saw not dark tunnel walls but a lake and mountains, moving backwards at walking pace. After a few seconds, some text ("Find yourself") appeared and then the scene faded to reveal the punchline ("Vermont").

I was inside an underground, train-sized zoetrope. Based on the speed of the train, the frequency of the lights inside the carriage, and Victorian technology, somebody had created a short animated film.

What a great idea. A quick Google even turned up this video: