Minecart with furnace is obtained by crafting a minecart with a furnace in a crafting table. It is primarily used for self-propelled rail transportation, as it can move along tracks when fueled with coal or charcoal.
Minecarts with furnaces are commonly used in early-game rail systems, pushing other minecarts along tracks. However, they are less commonly used in modern minecart automation due to the availability of powered rails.