Minecart Boost With Minecart Furnace

When a Minecart Furnace (with fuel) hit an other Minecart (except Minecart Furnace) the Minecart will have a huge boost. The boost is 3 time longer then a Powered Rail Boost! Here is a video

PS: In the video there is a Powered Rail but it also work if the Minecart Furnace start on a normal one