For these vehicles, model is "Aronde Commerciale" (sheet metal van with windows).
http://www.imcdb.org/vehicle_1558951-Simca-Aronde-Messagere-1954.html
http://www.imcdb.org/vehicle_816593-Simca-Aronde-Messagere-1956.html
http://www.imcdb.org/vehicle_93240-Simca-Aronde-Messagere-1956.html
http://www.imcdb.org/vehicle_9096-Simca-Aronde-Chatelaine-1956.html

2013+
http://www.imcdb.org/vehicle_1743412-Ford-Police-Interceptor-Utility-U502.html
http://www.imcdb.org/vehicle_1747238-Ford-Police-Interceptor-Utility-U502.html
http://www.imcdb.org/vehicle_1751141-Ford-Police-Interceptor-Utility-U502.html
http://www.imcdb.org/vehicle_1580397-Ford-Police-Interceptor.html
http://www.imcdb.org/vehicle_1580419-Ford-Police-Interceptor.html
http://www.imcdb.org/vehicle_1598825-Ford-Police-Interceptor.html
http://www.imcdb.org/vehicle_1613237-Ford-Police-Interceptor.html
http://www.imcdb.org/vehicle_1684730-Ford-Police-Interceptor.html
http://www.imcdb.org/vehicle_1698750-Ford-Police-Interceptor.html

For all "Berliet GBC 8 KT", first year is 1961 not 1971.
http://www.imcdb.org/vehicles_make-Berliet_model-GBC+8+KT.html

https://fr.wikipedia.org/wiki/Berliet_GBC8_6x6_Gazelle