Reminds me of those guerilla artists who would project sms messages onto public buildings and signs.
Link: Urballoon: an urban media space.
Urballoon is a helium balloon that’s equipped with a projector and a wireless connection to the web. An accompanying website/web application enables users to submit text and images and have it broadcast in public space.
textually.org: SMS Guerilla Projector
I found this again, thanks to textually.org. I mentioned it here. Link: textually.org: SMS Guerilla Projector. The SMS Guerilla Projector is a high powered, home made projection device that can be used to project SMS messages on to buildings, signs