Minecart with Command Block in Minecraft

The Minecart with Command Block is an item that is essentially just a command block that has been placed in a minecart. It cannot be obtained by the player in the survival game modes or even through the creative inventory. The only way to get a Minecart with Command Block is through the use of the commands.

A Minecart with Command Block (via screenshot)

How to get a Minecart with Command Block?

The Minecart with Command Block cannot be obtained in any of the game modes, this includes the creative inventory as well. The use of commands is the only way to a Minecart with Command Block. Players can use the summon command to get themselves a Minecart with Command Block.

The command used for summoning a Minecart with Command Block (via screenshot)

What is the use of a Minecart with Command Block?

The Minecart with Command Block combines a minecart and a command block and while the minecart, visually, appears to be an impulse command block, it instead functions more like a repeating command block, and runs its command once every four ingame ticks when on an active activator rail.

The command user interface of a Minecart with Command Block (via screenshot)

Conclusion

The Minecart with Command Block is a special item that can only be obtained through the use of commands. Since the command block works like a regular impulse command block players can use it by placing the Minecart with Command Block on an activator rail.