Complex sentence: In 1949 Siata launched theor own car, the Siata Amica and in 1968 they launched Siata Spring, a sports car based on parts from Fiat 850.
Split into simpler sentences: In 1949 Siata launched their first own car, the Siata Amica. In 1968 they launched Siata Spring, a sports car based on parts from Fiat 850.