Minecart with Furnace

Powered Minecart
In Secret Friday Update 7, Notch implemented powered Minecarts. To create a powered Minecart you first need to have a Furnace and a Minecart, place the furnace above the Minecart in the crafting window, and you will obtain a powered Minecart. The Minecart can be powered from the same fuels as a furnace. However, it works best with coal.

To use the Powered Minecart, place it on a track, then select your fuel and right-click on the Minecart. When right-clicking on the Minecart, you want to face the direction you want it to travel. You can make the cart change direction by right-clicking it, facing the opposite direction of travel. No coal will be lost doing this. Destroying a Powered Minecart will give you a Furnace and a regular Minecart.