Minecart with Monster Spawner

A Minecart with Spawner is a combination of a Minecart and a Monster Spawner. Its NBT Structure is the same as a regular Monster Spawner and as such works in the same way, except for being able to spawn mobs while it moves. It can only be obtained with the command, and can only be placed with the use of mods or external editors. Unlike other minecarts, it does not have an item form.