If any vehicle in a fleet is first registered after the final date for the annual payment of fees under the laws of this State as they exist without NRS 706.801 to 706.861, inclusive, such vehicles shall pay fees in the amount provided by law for the then registration of the vehicle, in the manner provided in NRS 706.841, and such vehicle shall after registration be treated for all purposes as otherwise provided for vehicles of a fleet.
NRS 706.851