Some urban pranksters out in San Francisco recently installed swings on a few BART train cars. The resulting photos are awesome.
Caroline Woolard did a project like this in New York back in 2006. Check out her video:
Previously: Statue Swing, Bus Stop Swing
(thanks Rob)
Related posts:
Statue Swing in Warsaw
Upcoming: No Pants! Subway Ride
Subway Sign Marriage Proposal
OMG!! That is so awsome!!!!
I love that it folds up into a backpack! Such a cool idea