Cosmic Car Key

The Cosmic Car Key is a Mount-summoning item. When used, it summons a rideable UFO that allows the player to fly and hover indefinitely. It is dropped by the Martian Saucer mini-boss during the Martian Madness event.

Tips

 * When using this mount, it may be useful to replace accessories such as any Wings or Boots.
 * While they lack infinite flight time, using wings with hovering abilities in tandem with Lightning/Frostspark Boots can provide more speed and mobility.
 * Using wings with a fast ascent speed such as Fishron Wings, it is possible to fly upwards with the wings, deploy the mount and maintain the speed of the wings beyond the duration of the wings.
 * Using the Rod of Discord can be a great way to travel while using this mount, as you can teleport through tight areas rather than dismounting the UFO.
 * It's possible to give this mount to another player while mounted and still keep using the UFO.
 * The mobility of this mount and the ability to use items while riding it make it a good mount for construction.
 * If one needs to have an infinite flight mount underwater, the Cute Fishron Mount is a good replacement for the UFO.

Trivia

 * The buff tooltip is a reference to the film Independence Day, in which a Macintosh computer is used against an alien spaceship.
 * The name of the item might be a reference to a line in a rant about the insanity of everyday life by Eric T. Duckman from season 3, episode 6 "A Room with a Bellevue" from the American adult animated sitcom Duckman. The line goes, "...knowing when it's time to flash the cosmic card key at those Pearly Gates, I won't be in the coffin anyway...".
 * The UFO mount and the Shrimpy Truffle  mount are very similar, both flying in the air, but the UFO mount cannot go into the water, while the Shrimpy Truffle can. But the Shrimpy Truffle goes very slow on land, like what the tooltip says.

History
宇宙车钥匙 Clé de Voiture Cosmique 우주선 열쇠