On December 6, 1958 agreement was signed between the Polish and Czechoslovak, to transfer Jelcz's Motor Undertakings license to manufacture intercity bus Škoda 706 RTO with the body's design Karosa, the village Vysoké Mýto. According to the Czech side of the agreement provided a permanent establishment in Jelcz-Laskowice complete chassis, which deposited were produced under license from the body. At the end of 1959 assembled the first test series of 20 units of Jelcz's 043 bus.