Ghent has never been interested in museum vehicles, nor does it have the space to do so. Coincidences lead to possibilities, which will not soon reappear. Only the tram (01) is still in Ghent (now: 2020).
The indication on the tram (route 30) never existed in reality: the line was withdrawn when the P.C.C.'s entered into service, but the route was still on the indication of the first trams.
The choice was logical: only route 3 existed on the trolleybus.