I used to use a regular digital camera to video CrazyBike2's rides to various places around town, just to get some of the crazy / stupid things drivers do on camera so others could see what I had to deal with...but because its' a big cargo bike, I didn't get much of the behaviors compared to riding regular bikes.
Thought about it for the SB Cruiser trike, but it's large enough that I get almost none of the dumb stuff done to me that would happen on a regular bike. Maybe someday, if a reliable, small, hi-def camera setup that will do "all four sides" is really cheap.