The BA-11 armored car in Minecraft, brought to you by the hands of RJBud1 (me).

From Tanks-encylopedia:

"
Following the success of the BA-10, the Soviets decided to upgrade the vehicle further. They were going to use a ZiS-5 army truck, which was better suited to rougher terrain than the GAZ-AAA as used on the BA-10. When the final prototype of the BA-11 was developed and tested, small numbers were produced as a pre-series, just before mass production was due to start. As a result of the outbreak of the war, the few produced were to be the only ones ever built, and even despite various upgrades being designed, the BA-11 project was cancelled."

So, basically, it was a prototype vehicle.

Enjoy!