I've only seen someone get run into once, and that was by two 8-year-old kids. I think that this family was using them nicely - I only saw them rolling when there was no one near them. Plus, given that all but one of them was older, I think they are in control of their bodies' movements much better than a lot of kids in them are. =o) And dude, I totally want a pair. I've wanted them for ages.

LOL! Hardly. I think this is the only time you could ever be even remotely described that way.