I've never seen them in person, but they don't look like they woould be very bright... But in theory you could hook them up to an LED flasher and make them dance...
Hey, I put this link in offroadaddict's post about strobe lights: http://www.summitracing.com/parts/IPC-CLR99B18F1/
What do you think about these wired to a flasher for side warning? Have you ever seen them/are they bright enough?