Many people seem to like the flaming mine cart I have in my storage room. This video shows you how you can add the option to your mine cart stations to have flaming mine carts.

Passing by the lava pillar makes the mine carts flaming. Passing by the water pillar will extinguish the flames. Adding the 5x3 track section to your mine cart system allows you to turn flaming mine carts on/off by controlling the junction.

Flaming mine carts are mainly just for looks. They will burn indefinitely until they break or pass by a water column. The fire produces no light.

Mobs in flaming mine carts receive constant damage until they die. An application for this is creating new and interesting mob traps.

Mine carts will break if they pass by the lava too slowly. You can use this to quickly empty your storage carts.