The furnace cart pushes shoots other carts down the track, and stops moving on its own, shortly after fueling it.

What I expected to happen was when I loaded the coal into the furnace cart, the furnace cart would continue moving in the direction I activated it, until it ran out of fuel. When I pushed the normal cart with the furnace cart I expected both carts to travel at the same relative speed, and the furnace cart to actively push the normal one.

I put coal into a furnace minecart, and activated it, only to have it stop a short distance away, although there was fuel in it, and previous momentum. it wasn't out of fuel, as smoke clouds were coming from it's top, it just eased to a stop about 10-20 blocks away. In addition, when I pushed a normal minecart with a furnace cart, the normal one shoots off down the track, way faster than the furnace fart is moving, and derails itself.

Steps to Reproduce:
1. Put a furnace cart on a track.
2. Power it with fuel.
3. Wait for it to stop.

1.Place a furnace cart on a track.
2.Place a normal minecart in front of it, in the direction you wish it to go.
3.Fuel the furnace minecart, and watch as the normal minecart shoots off, and then the furnace cart to stop shortly after starting.