Vehicles are a fast way to travel great distances. They are obtained by discovering them in the World and riding them for the first time. After that, the Player is able to purchase them at the Models screen. Once unlocked they can be spawned for free. All vehicles are currently single-person only.
Sometimes vehicles spawn on hillsides or in mid-air, and roll down the hill, which may cause them to appear to be in a different biome. This might also cause repeated spawning of vehicles at that same spot.