If you want this to be added in the game, sign your petition here: http://ift.tt/25uqKNf

Imagine if more minecarts could be attached to one another, up to 10 minecarts could be moved with a furnace minecart as Steve can't push so many minecarts on his own

If you ever struggled with moving items with minecart chests, imagine having a train of 1 furnace minecarts and up to 9 minecart chests go at once

Even in Minecraft: Story Mode, in the scene where they are in the nether escaping from a Ghast, all the characters move together as if the minecarts were connected

This could be a cool feature for 1.10