Minecart with Dispenser

Minecarts with Dispensers are planned vehicles that, as the name implies, is a dispenser in a minecart. It will probably be used to make traps, for example, a dispenser minecart peppering you with arrows as it moves along. It may also be another form of storage.

A Minecart with Dispenser will probably fire an arrow when hitting an Activator Rail.

Gallery
In the 13w02a snapshot there was a feature were using third party applications you can place a block in a chest. However it does not function and it will not drop it when it is broken this is probably Dinnerbone testing it.