The world economic crisis of 1929 hit Biel particularly hard. Sales in the watch industry collapsed dramatically - Biel now suddenly counted one third unemployed. The city of Biel, under the leadership of the socialist mayor Guido Müller, decided to take an unconventional measure: After negotiations, General Motors agreed to operate an automobile assembly plant in the city - in return, the city of Biel took over the planning and financing of the new factory. With the help of an investment of two million francs, more than 300 jobs were created.
The Biel City Construction Office, headed by Karl von Büren, the architect Rudolf Steiger and the General Motors company formed a joint venture: while Steiger took care of the project planning and the interior design, the City Construction Office worked out the environmental design and the implementation plans and took over the construction management.
After only six months of construction, the factory was completed in 1936. See here for impressions on old pics. In 1947, General Motors bought the plant from the city of Biel. From 1955 to 1957, an additional assembly hall and a spare parts warehouse were built. The architects Suter + Suter from Basel now acted as planners. In 1976, the building was converted into a parking garage, shopping center and office building.