Shopping Carts are devices available in Fortnite: Battle Royale. It was released in the v4.3 update. They are the first "vehicle" players has access to.
Up to two players can use the cart at once, with one pushing and the other riding as a passenger. The passenger can shoot from their position. They are scattered throughout the map. Players should note that they can take fall damage, and should they leave their cart unattended on a hill, it will roll away from them at high speed.
Building ramps can grant players extra speed and allow them to jump great distances.
If a Shopping Cart falls from a great height the player will be flung off and the cart will be upturned giving the option to flip it.