I picked up the new MM&FF Magazine, and there is this huge article on NO2. At the end of the article is says something about using Nitrous if you have the proper license to carry it in your car. It says many states have this as a law. It even showed an example of a license application for the state of New Jersey. Or this new, or has this been around for a long time? And what other states require Nitrous Licenses. :shrug: