6 Mai 2007 - Wien/Vienna – Erdberg tramway museum. Car 4301 is an experimental Type D tram from 1957, built by Graf und Stift. It was constructed by joining two 1926 four-wheelers together to form this articulated vehicle (in England, we call this type “two rooms and a bath”). This was the first of many articulated cars in the Wien fleetWien/Vienna – Erdberg tramway museum. Car 4301 is an experimental Type D tram from 1957, built by Graf und Stift. It was constructed by joining two 1926 four-wheelers together to form this articulated vehicle (in England, we call this type “two rooms and a bath”). This was the first of many articulated cars in the Wien fleet Autor: dvigar