10 p.m., the first series produced ÖV 4 left the new established factory on Hisingen in Gothenburg. The ten prototype cars that had been assembled in Stockholm were never sold, except for one that was sold to Volvo's photographer Sven Sjöstedt and was later donated to the Volvo Industrial Museum around 1930, but was used as transportation vehicles within the manufacturing plant and as 'test benches' for new developed components during the first years. Economic problems The new company did not show any profit for the first couple of years and SKF invested a lot of money to keep the company running. In 1928 the production of trucks began with the basic chassis components from ÖV4. The production of trucks was on a small scale in the beginning but the concept was successful from start. However, in late 1929 it was really close that SKF sold the company to Charles Nash, president of Nash Motors in the United States, but Björn Prytz and Assar Gabrielsson managed to convince the SKF board to call the deal off, just one day before Charles Nash arrived by boat to Gothenburg. Charles Nash and Assar Gabrielsson became good friends during his visit in Sweden and Assar visited Nash in America on several occasions later to discuss the automobile business. At the end of 1930 AB Volvo showed a small profit for the first time. In 1935 SKF came to the conclusion that Volvo now was ready to stand on its own feet. Volvo was introduced on the Stockholm stock exchange and SKF sold most of its shares. SKF could now concentrate on their core business, development and manufacturing of bearings, and still are, more than 100 years from when the company was founded in 1907. Volvo - finally a success When Assar celebrated his 50th birthday in 1941, the 50,000th Volvo car was delivered. It took ten years to produce the first 25,000 cars but only four years for the next 25,000 cars. In 1944–45, just after the end of the Second World War, the 'modern' family car PV444, with a completely new design, was introduced and the car was an immediate sales success. The company now stood on solid ground and the production of both cars and trucks was increasing fast. The last years Assar Gabrielsson held his position as managing director for AB Volvo until 1956 when he became the chairman of