But wearing it does not necessarily mean you're using it.
I live in Long Beach, where TED is held, and I had personal experience with someone using Google Glasses while driving during this years event - I was on my motorcycle a few blocks from the convention center, and I finally pulled over (in heavy traffic) and waited for him to get well away from me before I entered traffic again.
I hope these things are banned from use while driving - it's bad enough trying to stay alive on the roads as it is.