Travelling light in New Zealand

On my recent vist to New Zealand in December 2017, I spent 4 weeks travelling within the Northern part of North Island. After a few days of exploring the city of Auckland and its suburbs, on foot, by Ferry and the public buses, I decided to rent a car for my travel to Northland. Currently Best Car Rentals, are running a promo deal offering the "Third week free" offer, which I was able to avial myself.