The vehicle was based on the earlier half-track samochód pancerny wz.

The original vehicle proved to be unpopular with its crews who were unhappy with its handling, low maximum speed, as well as poor cross-country capabilities,[1] and it was decided to rebuild it as a wheeled vehicle.

[2] The tracks were replaced by the rear axle from Fiat trucks.

[3] The cars were built in a number of versions with different engines and slightly different armored plates.

34 captured by the Germans were handed over to the Independent State of Croatia.