this is amazing!
create a portable projector with a mac mini, case, battery and projector. then attach it to the side of a tube/subway/metro train and project through the tunnel. get a friend to remove it at the next station. moving canvas is dreamed up by german artists fredéric eyl, gunnar green, and richard the incorporating the two ideas parallel worlds and parasite. as has been suggested elsewhere it might not be advisable to attach metal boxes to the side of a tube in london without permission or you might get shot! i spoted this on ben hanbury's blog - thanks also to jon reid for tipping me off about it.
the resulting video is here (35mb)
ben also has a fab little video of a drive over chelsea bridge - reminds me of the luke halls/vaux traffic loop. also makes me want to get after effects! oh for more time in life to play...
this is in the same spirit as sms guerrilla projection