very nice. Hope no workmen were taking risks in the tunnels that day...
Would be nice to have a camera taking input and then reprocessing, or using it to trigger stuff as well... could do a chemical brothers' style on the fly video remix heh - like Michel Gondry's video for 'star guitar'...
http://www.sputnik7.com/vod/index.js...music&key=stgt
(in case you've missed it)