I just add something about WWI vehicles still used in 30's.
Tsarist Russia was one of the biggest adopters of armoured cars in times of WWI this cars goes mostly in hands of White and Red's during civil war. Some of them were captured by Germans and newly created states on ashes of Rusian empire like Poland, Estonia or Latvia.
Garford-Putilov
Heavy armoured car soviet cars were used into late 20's and dismantled. But Latvia have three of them and were captured by soviet during annexation in 1940. They were used in 1941 probably around Riga. Poland also captured 2 of them during war with soviets in 1920. They were used until 1927 and finally dismantled in 1930.
Garford-Putilov google translated to english
Austin / Austin-Putilovets
Russian license build British Austin armoured cars. This vehicle is already in polish OOB available between 1930-1931. Both versions English imported Austin I until Austin III and Russian build Austin-Putilovets. All captured from Soviets during war in 1920.
Soviets have 73 of them until 1931 in regular army units, 40 of them English build versions. Like in Poland they remove them in 1931-1933 and relegate to second line units. They were in NKVD internal troops rebuild on new ZIS chasis and participated in fights in 1941. They were also some captured by Estonian during their war for independence and later recaptured again in 1940 by soviets.
Austin / Austin-Putilovets
Fiat-Izhorski
Existing also in polish OOB similar in aparence to Austin. Red army used them until end of 1930 and then were transferred to school units as a training cars. Soviets have 47 units. Poland captured on of them and after 1931 was on static display in Modlin as a monument there captured by Germans. Estonia, Latvia and Lithuania have also them and after incorporations of their states were back again in Red Army. There they were used during fights of 1941 and probably all lost.
Fiat-Izhorski
Austin-Kegresse
Vehicle with halftrack mechanism of French engineer who was chief of Tsar vehicles garage during WWI. They were produced and used by Red Army during Civil-war in 1919. Used until 1933 when last four vehicles where dismantled. Poland captured two examples and also used them quite long until 1931. One became a monument in Modlin fortress and was captured by Germans. This vehicle is also modeled in polish OOB.
Austin-Kegresse
And there is the link to page with describe what happens with this post civil-war MK.V captured in Russia. His fate during fights in Berlin.
http://beutepanzer.ru/Beutepanzer/uk/MK_V/Mk_V.htm
http://beutepanzer.ru/Beutepanzer/uk/MK_V/Mk_V-2.html