304 was designed to carry rails for reconstruction and construction of the Auckland Tramway network and was perhaps one of the most unique trams in service in New Zealand.
10 December 1956 was number 304's last journey into Central Auckland where it removed the remains of a damaged safety zone.
They were later sent to the Museum of Transport & Technology in Auckland where they were fitted to two trams when undergoing restoration (numbers 44 & 11).
Imported tram track was shipped from the United Kingdom and taken to a stub track on Quay Street around the eastern corner from Queen Street where it was craned aboard 304, which had especially dished front aprons so over-length rails could be carried.
Graham Stewart (author of many New Zealand tram and history books) had written in chalk on the front aprons "THE END".