Our sister site Jalopnik has a stellar collection of movie cars — both official and replicas. These are mostly fan-made, drivable replicas of cars and bikes from science fiction.

Batmobiles

Some of the more ambitious projects are the Batmobiles. You can actually purchase kits to convert various car models into an Adam West-era Batmobile. But some fans prefer to make their Batmobiles the hard way.

It took Leif Garvin of Stockholm 20,000 hours and $1 million to convert a 1973 Lincoln Continental into the Tim Burton Batmobile. It may not be quite as hi-tech as Batman's car, but it does feature a voice recognition system and rear cameras. [via Toxel]

Bob Dullam attracted massive amounts of attention when he showed off his homemade Tumbler from Batman Begins. Dullam made the entire vehicle from scratch, and even made his own Batsuit and props to go with it. [via Superhero Hype]

And frequent builder Grant Hodgson made a Tumbler of his own. [via Jalopnik]

Bob Causey helped Dullam with his Tumbler and decided to create a Batmobile of his own. Causey took on the Batman Forever version, complete with a remote controlled top. [via /Film]

Kaneda's Bike

There are plenty of models of the iconic motorcycle from Akira, but many of those are non-working copies. Neo-Fukuoka, not a fan group but a professional garage, created multiple, working copies of Kaneda's bike, some offered for sale. [via Riding Sun]

But another fan, Matus, is also creating a replica of the bike from scratch, although he hasn't yet progressed to the exterior.

Mad Max Vehichles

Mad Max vehicles are a perennial favorite among vehicle modifiers. There are impressive lists of fan-made Interceptors at Last Interceptor and Mad Max Movies. But one fan stands out above them all. Adrian Bennett didn't just transform a Ford Falcon Coupe into the famous vehicle, he moved himself, his car, and his entire family from England to a tiny Australian town so he could live out his Mad Max fantasies. [via SCI FI Wire]

Other Mad Max vehicles have gotten the fan treatment as well, such as this Yellow Interceptor made by Grant Hodgson (who also did one of the Batman Tumblers):

And Goose's bike by Mike Acebo:

KITT

Knight Rider's KITT is another favorite, and again there are kits you can purchase to give your car KITT's Cylon eye. Of course, the best KITT mods don't just change the outside of the car, but are also incredibly detailed on the inside, such as this converted 1984 Firebird, which speaks in KITT's voice [via Jalopnik:

And this 1992 Firebird:

Frankenstein's Car

The Gator Car from the original Death Race 2000 would have been more fun, but some Russian fans of the Death Race remake took an impressive crack at Frankenstein's car, starting with a Chevy Camaro. [English Russia]

The DeLorean Time Machine

A DeLorean is already a DeLorean with those retrofuturistic gull-wing doors. But add a flux capacitor, a temporal display on the dashboard, and a liberal sprinkling of light-up buttons, and you've got yourself Doc Brown's time machine. [Auto Blog]

Ecto-1

George Barris, who famously designed the original Batmobile among other TV cars, famously made a replica of Ghostbusters' classic car, one that is perpetually for sale. But others have taken on the Ecto-1 challenge as well. Ghostbusters fanatic Joe Kerezman created an Ecto-1 of his very own.

And a fan calling himself "Venkman21" modified his from a Cadillac ambulance.

Luke Skywalker's Landspeeder

They may not hover, but fans can always pretend in their homespun landspeeders. [all via Interbent]

This puppy was made from a 1988 Ford Escort and is actually a licensed, street-legal vehicle.

This pre-distressed model, created by Daniel Deutsch, runs on batteries and can climb to 25 MPH — impressive, though not exactly putting the "speed" in "landspeeder."

Why the teeth and the clown's head on a pole? It's an art car from Burning Man.

And this last one — which is a bit heavier on the wheels — comes from Pawtucket, Rhode Island, and annual Star Wars Day.

Batmobile Art has a more detailed description of Giger's design:

His unique "X" shaped design was to include articulated front legs/mandibles, retractable fins, and gatling gun emplacements on each of the four pods on the sides of the vehicle. The design also combined side and forward intake ports with organinic spines and a central pod connecting the four legs.

H.R. Giger's Batmobile design [Super Punch]

Posting on the SuperHeroHype forums as “youngbat,” he been constructing a working Batmobile from reference photos he’s found online. He estimates that, when complete, the car will have cost him $50-70,000 in parts and insists he has no intention of selling it. He has also made a Batsuit and Batbelt so his neighbors can get the full effect of living next door to Batman. Once the Batmobile is complete, he plans on adding a Batpod to his collection.

My Tumbler progress [SuperHeroHype via TechEBlog]

The Batmobile from Batman Begins. This was the first on-screen version of Batman's muscle car that didn't just look like a cheesy toy car. Instead of the stretched-out roadster of previous movies, director Christopher Nolan opted for a compact, tank-like design. In "attack mode" the driver shifts to the middle of the car, in a more secure prone position. This car doesn't look like it's only designed to impress Kim Basinger.
Top speed: 110 mph, plus jet engine and adjustable control surfaces let it jump 30 feet without a ramp.

The DeLorean from the Back To The Future movies. This car's main superpower is making those movies look incredibly dated. But it also travels in time if you feed it enough plutonium. And after a visit to the year 2015, it also gains the ability to fly, with wheels that turn sideways and become thrusters.
Top speed: A regular DeLorean could reach 124 mph. It needs to reach 88 mph to time-travel.

The flying taxi from The Fifth Element. It looks just like a regular cab, but it can fly. It handles amazingly well, judging from some of the teeny openings Bruce Willis manages to steer it through during the high-speed cop chase. And it can stop on a dime to hide behind billboards.
Top speed: Unclear, but it's fast. The original movie script says: "Korben and his flying taxi are absolute masters of the air. The cops have trouble following him."

The self-folding car from that SciFi Channel ad. Long after people have forgotten Flash Gordon and Tin Man, they'll still be passing around this ad. It looks like a regular pick-up truck, until the driver presses a button. Then it folds up to the size (and weight) of a golf ball.
Top speed: no clue.

The Whomobile on Doctor Who. Stranded on Earth in the early 1970s, the Doctor started dressing like Prince. Except instead of driving a little red Corvette, he pimped out an antique roadster named Bessie to go super fast. Then he built his own spaceship-looking car. With huge honking fins! Because, of course, an alien trapped on Earth has to stay incognito at all costs.
Top speed: 150 mph (in real life), plus the Whomobile can fly (using dodgy greenscreen.)

The Spinner from Blade Runner. Deckard's cop car flies, but also has vertical take-off and landing (VTOL). It uses regular internal combustion, plus antigrav and a jet engine. It also directs air downwards to create lift. And it has a pretty sweet glass cockpit.
Top speed: Deckard mentions a fellow cop was going 150 mph when he went off a cliff.

KITT, from the Knight Rider TV show and TV movies. KITT was a Pontiac Trans AM with a super-computer that could talk to Michael (its driver) and even drive itself. (Plus KITT prints money in one episode, which could be handy.) The new Knight Rider, airing in February, will feature a new KITT that can launch a mini-car drone and fire a rocket launcher
Top speed: 300 mph, plus a "turbo boost" lets you jump over obstacles.

The Lexus from Minority Report. Lexus designed a special flying car for Tom Cruise to zip around the city of 2054 in. The car includes an electric engine, body panels that change color at a voice command, doors and ignition that require a DNA match, and "auto valet."
Top speed: According to Lexus, this car can get up to about 350 mph. We have a winner!