I'll just add this,
It is illegal to have any loaded firearm inside any vehicle in New Jersey without a valid Permit/License.
(See Places off Limits about ammo specifications also.
Here is what the NRA says about New Jersey.
New Jersey has highly restrictive firearms laws. The New Jersey Supreme Court has ruled that anyone traveling within the state is deemed to be aware of these regulations and will be held strictly accountable for violations. (End NRA Statement)