The first ten pre-series vehicles, model Volvo XC78, were designed and assembled in Stockholm at AB Galco under the supervision of Gustav Larson, at that time still having his other work at AB Galco to attend to. A "design-office", often called "Volvo's first design-office", was established in one room of Larson's private apartment at Rådmansgatan 59 in Stockholm. The design work started in the autumn of 1924 and a number of engineers were involved, among them engineer Jan G. Smith, that had returned from America in 1924, and later engineer Henry Westerberg.
The initial ten pre-series Volvo XC78 vehicles were created and constructed in Stockholm at AB Galco under Gustav Larson's supervision, while he was still handling other responsibilities at the company. A "design facility," often referred to as "Volvo's first design office," was established within one room of Larson's private residence at Rådmansgatan 59 in Stockholm. The design work began in autumn 1924 and involved a number of engineers, including Jan G. Smith, who had returned from America in 1924, and later Henry Westerberg.