Not only is it environmentally friendly to use the mass transit
system when you visit a major city, but it turns out that it can be pretty
entertaining too. Some creative advertising folks have taking the old-fashioned
“flip-book” concept and created a series of still billboards that when viewed
from a speeding subway window, it will appear that you are watching a
moving video billboard. Neat huh? So the next time you visit Boston, San Francisco,
London, Rio de Janeiro or any other major city, it might be worth checking out!
The Subway Tunnel As Video Billboard
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