Bikes Against Bush: An Internet-Enabled Protest:

"Bikes Against Bush is a one-of-a-kind, interactive protest/performance occurring simultaneously online and on the streets of NYC during the upcoming Republican National Convention. Using a Wireless Internet-enabled bicycle outfitted with a custom-designed printing device, the Bikes Against Bush bicycle can print spray-chalk text messages sent from web users directly onto the streets of Manhattan."
I am rendered speechless. Think I'm in love. I want one too.