Alongside the classic PV444 sedan, Volvo marketed chassis (PV445) used by Swedish coachbuilders who developed special versions. Some of these cars were proposed by Nordbergs, which was based in Stockholm, by Ringborgs Karossfabrik of Norrkoping and by Valbo Karosserifabrik located in Valbo, in the territory of Gastriklsnd, located in the municipality of Gavle.