Bus

The Bus is an NPC trade ship that can be found flying near planets. It is a large, interactive ship that has graffiti all over the hull.

Behaviour
Buses are seen flying near planets, usually being pinned or constantly hitting the surface of planets while it is trying to fly. When you fly near its side, it will automatically open the slide door, allowing you to go inside where have the choice to trade with the ship, as it provides limited protection. Because it sells items identically to the Station in the first system, it is best to only access the station when you run out of common consumables (Such as Bullets and Repair Kits).

Like most ships, it will start taking hull damage after its shield has been depleted, once the merchant has been destroyed, it will drop everything the ship is willing to sell, which is useful for low levels for supplies. In addition, it will not respawn until you restart the map.

Combat
The Bus has 120 health points, equipped with 2 Machine Guns and a Big Shield. They are very hard to take down by enemies due to its high health, constant shield regeneration and two auto-rotating weapons. The only occasion that enemies can take a Bus down is when a fair amount of ships armed with heavy weapons and nearby turrets are present (Along enemy bombers and rarely large meteorites).

Trivia

 * The Bus is the second largest imperial structure, first being the Station.
 * According to the game files, the Bus is in fact an imperial ship.
 * It is also hinted that it does not attack you when you're close to it.
 * There are words on the graffiti saying "AMMO", "TRADE" and "SHIELDS" on different areas of the hull.
 * WARNING the bus has horrible AI and it more than likely crash into you, crushing you completely or at least doing some damage.
 * It is likely called a "Bus" due to the fact that it has the ability carry the player into its open sides.