Paul H 
Hungary, 1948. New number plate, anyone? You can tell by the Hungarian emblem on the plates (the Kossuth Coat of Arms) that this photo was taken just before the communists completed their takeover in 1949. They replaced this emblem with their own, much-reviled, coat of arms. And from that point until 1958, individuals were not allowed to buy private vehicles.
Source: Fortepan [16490] / Magyar Rendőr (Hungarian Police)