[zraffz]

Yeah it's easy to get and needs to be renewed every two years. Fill out a form and send a $30ish money order to the state and withing 15 days you get your permit to handle/purchase nitrous. Being a gas it requires some responsibility on the owner's behalf. As the temperature increases the bottle pressure will increase; so do not push your luck with leaving it in a car on a hot day or else it can break the burst valve and fill your car with fumes. Remember to run a blow down tube as well. Make sure you bring a copy of the permit with you when your purchase nitrous for the first time and make sure to keep a copy in the car. In NJ it is illegal to have nitrous hooked up; this doesn't mean you can't have it in the car but you can not have the nitrous line running back towards the motor. I personally would not drive around with the bottle on a normal basis unless I was expecting to do something stupid... and I certainly wouldn't put the bottle in a visible spot because then you'd just be asking for trouble if the wrong person sees it.