Mine Cart

is a hazardous object in which is found only on Industrial floors. It moves along Rails that spawn in the map, appearing at regular intervals and moving in one direction. Any character it hits will take 30 damage, which is enough to kill some (if not most) NPCs in one hit.

Destroying
The can be destroyed with a Time Bomb or while in Giant form with the right timing. It can also be destroyed by detonating an Overclocked Generator.

After being destroyed, it will no longer appear on the rails — no new Mine Cart spawns to replace a destroyed one.