Whoever plugged this picture in with WW1 armor didn't know squat.

 

The picture was taken in World War 2 during the invasion of Russia by the Germans.  There are two vehicles involved: (1) the armored car in the foreground is a Soviet BT-6 with a 45mm gun; the tank in the back is a Soviet KV-2 with a 152mm gun/howitzer.  The KV-series tanks (KV-1 and KV-2) were forerunners of the famous T-34 and were better than the German panzer III and IV that they faced.  The KV-1 had a 76mm gun and the KV-2 had the 152mm gun.  The KV series were developed in to the IS (or JS) series of heavy tanks.  Called the "Josef Stalin" 1, 2, and 3 (post-war T-10) the tanks got heavier armor and armament.  The JS-3 (T-10) were the top of the line for Soviet heavy tanks in the post war years and much feared by NATO.

 

The BT-6 armored car was really an armored truck.  It was a 6x6 had tandem dual wheels in back.  Front and rear axles were driven.  There wre two spare wheels mounted so that they could turn and act as an another axle for cross country performance.  The idea was to give the vehicle less ground pressure and make it more agile cross-country.  The KV-2 was actually a self-propelled artillery piece on a tank chassis.