I was watching a show last night on Street Racing in Canada. They were busting all kinds of people and they were saying NOS is not legal in a street car. So what are the rules here in the states? I looked at the Califonia law and it's pretty vague. I can't see where a 10 pound bottle of NOS is any more dangerous than the 55 gallon LP tank I had in the bed of my dual fuel Ranchero.