Thanks!
I'm not sure how it would fare in the rain; presumably it would short. The LilyPad folks say they wash their e-textile projects, but that's when they're off and the battery is out. I could conccivably make a plastic sleeve that would fit over it, though I think really the answer is to not use this model in the rain. (I did ride with it on wet streets without a problem, but the wheels weren't kicking up much water.)