​Section 96 of the Weapons Regulation 2016 states that a person in control of a weapon must ensure the weapon is not placed in or on a vehicle unless:

1. If the vehicle has a lockable boot, the weapon is locked in the boot; otherwise:

(a) the weapon is locked in a metal container fixed to the vehicle; or
(b) the weapon is in a securely closed container that is out of sight in the 

2. The metal container and anything on or attached to it, must not suggest that a 
    weapon is inside.

3. A person in control of a weapon (whether or not the person has custody of it) must 
    ensure the weapon is not left in an unlocked vehicle if the vehicle is not being 
    attended by someone licensed to possess the weapon.

Note:  This does not replace your usual secure storage facility as defined by section 94 of the Weapons Regulations 2016