The '50s were not easy times for motorsport in Czechoslovakia, due to the political climate not really supporting the activities of the passionate individuals.

In that difficult moment, a race car was designed and manufactured by Mr. Alois Rieger and his son Vojtěch in Hradec Králové: the two-seater HAKAR ((Ha = Hradec, Ka = Králové, R = Rieger). He used a modified chassis of the FIAT 1100 from 1939. The car was gradually upgraded with various Škoda engines engines up to a capacity of 1500 ccm.

Body shapes were taken from the French racing car Simca Gordini and made of aluminum by a plumber named Kalvach. The last major modification was done in 1957. The car raced between 1950 and 1959. It was acquired in František Čečil from Pilsen in 1991 who undertook a complete refurbishment between 1995 and 2008. It won a number of successes at that time and, in recent years, two European champion titles in historic uphill racing.

• Engines:
  • 1950: FIAT straight 4, 1089 cc, 38 kW / 6000 rpm
  • 1953: Škoda 1221 cm³, 44 kW
  • 1954: Škoda 1500 cm³, 55 kW
• Top speed: 160/170 km/h
• Weight: 595 kg