Fortnite's in-game MOTD has just been updated to feature a new vehicle: [ Register or Signin to view external links. ] ! The following description has been provided:
"Charge the boost to crash through structures or get some air!"
The official description for the Quadcrasher provided by Epic Games - "Propel yourself and a friend into battle with this new two-seater vehicle" - doesn't give much away. But, when they say 'propel', they mean it quite literally, as you can launch yourself (and a friend) high into the air with this insane looking vehicle.
With a large powerful thruster fitted to the rear end, the Quadcrusher can take off like a jet engine, and if you find yourself a small ramp or hill, you can get some serious airtime.
It is easily the most useful vehicle so far, providing some functional utility other than simply faster travel, unlike the Shopping Carts or ATK.