[[quoteright:300:[[Film/BackToTheFuture http://static.tvtropes.org/pmwiki/pub/images/bttf_delorean_6200.jpg]]]]

This is a sci-fi trope in which a wheeled vehicle of some kind is capable of flying or hovering by simply rotating the wheels 90 degrees, usually up and into the vehicle in question. The hubcaps then become thrust-capable engines, propelling the vehicle upwards.
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!!Examples:

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[[folder: Comic Books ]]

* ComicBook/{{SHIELD}} hovercars are both the TropeMaker and the UrExample. NickFury (and the reader) get their first look at the iconic [[AirborneAircraftCarrier Helicarrier]] from the passenger seat of a HubcapHovercraft Porsche, courtesy of course, of the explosive imagination of JackKirby.

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[[folder: Film ]]

* The [=DeLorean=] in ''Film/BackToTheFuture Part II'' is the TropeCodifier. Turns out that by 2015, all cars can undergo a "hover conversion" like this.
** The Time Train from the end of Part III also has these, except it has its own thrust engines - the wheels are still, for some reason, rotated by the steam pistons in their flying position.
* [[WesternAnimation/{{Cars}} Mater]] in ''[[PixarShorts UFM: Unidentified Flying Mater]]''.
* A rough-draft version of such a car appears in ''Film/CaptainAmericaTheFirstAvenger'' when Howard Stark is showing off a futuristic car at the World Expo. However, it only floats for a few seconds before suddenly crashing.

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[[folder: Literature ]]

* Although it doesn't use this for flying, Ian Fleming's ''Film/ChittyChittyBangBang'' may be the Trope Codifier. To wit: the Pott family is picnicking on a beach, and the tide comes in. Mr. Pott turns a knob, causing Chitty's wheels to turn down and out in this manner. The car glides along the water exactly like a hovercraft.

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[[folder: Live Action TV ]]

* In ''Series/AgentsOfSHIELD'' it seems that Howard Stark managed to produce at least one fully functional version of the prototype seen in ''Captain America''. Agent Coulson [[ICallItVera calls it Lola]].

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[[folder: Toys ]]

* The [[http://i164.photobucket.com/albums/u22/FOTN/Teenage%20Mutant%20Ninja%20Turtles/FootCruiserWithBe-BopRocksteadyandShredder3.jpg Foot Cruiser]] from the [[WesternAnimation/TeenageMutantNinjaTurtles1987 original Ninja Turtles]] toy line had wheels that folded under to give off this look, since the car is from Dimension X in the backstory. The toy itself couldn't fly, obviously.
* Some of the ''WesternAnimation/{{MASK}}'' cars were this.

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[[folder: Video Games ]]

* S.O.P.H.I.A. the 3rd and all of her variants from the ''VideoGame/BlasterMaster'' series.
* Many of the ground-based Transformers from ''VideoGame/TransformersWarForCybertron'' and ''VideoGame/TransformersFallOfCybertron'' use hubcap hover wheels when moving around at normal speed (to enable strafing), but flip down into standard wheel mode when boosting.
* One of the upgrades in ''Streets of VideoGame/SimCity''.
* The versatile hoverpod powerup in ''VideoGame/{{Vigilante 8}} Second Offense'' that levitates sportscars, motorbikes, [=RVs=] and garbage trucks alike.
* Danica Patrick's F1 car in ''[[VideoGame/SegaSuperstars Sonic & All-stars Racing Transformed]]'' will rotate its rear wheels 90 degrees backwards, and either spin up to turn into jet turbines for flight mode, or extrude propellers from the center of the rims for water mode.
* The karts in ''VideoGame/MarioKart 8'' do this for the anti-gravity sections of tracks.
* Before ''Mario Kart 8'' [[FollowTheLeader stole the concept wholesale]], ''[[Franchise/CrashBandicoot Crash Nitro Kart]]'' featured zero gravity sections using the exact same thing.
* Featured in ''Lego: Drome Racers'' as a power-up for the street and off-road vehicles. When activated, the car would begin hovering above the track at top speed. The drawback of this however [[AwesomeButImpractical was that the car wasn't very stable in this state and hitting walls, smacking into obstacles and trying to fly over the tops of opponents would result in the car flipping onto it's side, smacking into walls, spinning out or randomly crawling along the invisible walls around the track.]]

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[[folder: Western Animation ]]

* The short-lived ''WesternAnimation/PolePosition'' cartoon of TheEighties featured a pair of [[TalkingApplianceSidekick talking]] hovercars.

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