Second, carry away, in Carson, or Sparks, Reno...
Thirdly, if you can carry, it can be loaded. Exception to that is, in your vehicle, a rifle or shotgun can not have a round in the chamber.
Lastly, you can open carry in your vehicle. The weapon can be in a box, glove compartment, on the seat, on the dash, under the seat, between the seats, basically anywhere in the vehicle, in plain sight or not in plain sight, including in the holster, on your belt, as long as it is NOT concealed on your person.