Questions tagged [vehicles]

For questions about implemented technology that can be used for transportation. For questions about the act of transportation, consider using [transportation] instead.

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122
votes
33answers
29k views

What vehicle would be the best one to start a >1000 km travel in a post apocalyptic zombie situation?

In order to define the best vehicle these inputs have to be taken into account: The zombies are the classical ones, "the walking dead" ones are a perfect example (definitely killed only by headshot, ...
62
votes
12answers
12k views

How can I get my DeLorean to 88 miles per hour without a train?

I got pulled into 1885, just like Doc and Marty (Or I'm one of them, assuming I can get IP rights :)). I need to go back to the future, which means that I need to get my Ford Pinto time machine up to ....
50
votes
11answers
16k views

For how long after an apocalypse would modern cars remain usable?

Imagine a "soft" kind of apocalypse - nothing like Earth being hit by an asteroid. In particular - 90% of human population have just disappeared (no matter why). So there are abandoned cities and ...
41
votes
20answers
12k views

A road system with no traffic rules - what sort of vehicle is best?

In Britopia there were the Leftists who believed motorists should drive on the left and the Rightists who believed they should drive on the Right. The vote split exactly down the middle and it was ...
37
votes
3answers
8k views

Would EMP From a Nuke Stall a car?

In my story a man who works in Military Intel gets early warning that a nuclear attack on his base is inbound. He abandons his post, grabs his wife and kid from on base housing, and books it out of ...
29
votes
9answers
5k views

How much of a modern day tank can the 14th century replicate?

If a modern Day tank suddenly appears in 14th century Constantinople; in perfect condition, along with all the ammo, fuel, and components needed for it to run. How much of the technology in the tank ...
27
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9answers
7k views

Sailing without wind, but with strong currents

Context On my world, there is a lot of water: sea, oceans, ... There are also firm land and islands, so it's interesting to travel on the water. The problem is that there is NO wind at all, and lots ...
26
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9answers
8k views

Why would alien vehicles be tripods?

In The War of the Worlds the Martian fighting machines are tripods. Aliens are also moving around in tripods also in The Tripods. Let's assume that there are good reasons to build legged vehicles to ...
21
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17answers
6k views

What is the viability of trains on planets covered in water?

I want to write a science fiction book on a planet mostly covered by ocean, but I also want to incorporate trains into my story. However, it seems that with advances in ship and plane technology, ...
19
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8answers
12k views

Car headlights in a world without electricity

In a world like ours in the 1980s, but which for whatever reason does not use any form of electricity. (Either it does not exist or batteries and generators etc have not been invented.) For purposes ...
18
votes
21answers
7k views

In a world where Magic steam Engines exist what would keep people from making cars

I am working a wild wild west mixed with contemorary fantasy setting. So imagine knights in shining Armor, riding along side a train as a dragon flies over and breathes fire down. on they have what ...
18
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6answers
4k views

How long can I keep my truck oiled after the Apocalypse?

Background The Apocalypse came on Tuesday, and no one was ready. For us soft city folk, survival was mostly a matter of luck. If you fell in with the right group of people with the right skills and ...
17
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8answers
4k views

Would trams be workable on a low-gravity world?

After reading this thread from a bit under a year and a half ago about the most cost-effective means of travel on Mars, where one of the answers mentions rail as the best option, I started wondering: ...
17
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3answers
2k views

Designing a traffic system for flying cars

Well folks, 2015 has come and gone, and we still don't have widely-available flying cars. While there is some promising work being done on "flying cars", which are more like road-capable airplanes, it ...
16
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14answers
3k views

How to make vehicular combat viable in a Post Apocalyptic world?

I want to create a Mad-Max-esque post apocalyptic setting. Unfortunately after a bit of looking into this, there is one massive issue with the idea of lots of maniacs tearing across the barren ...
15
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7answers
3k views

How do Santa and the reindeer survive delivery night?

This related question asks about considerations for Santa's sleigh (particularly weight), but my question is more basic: how do you design a vehicle that satisfies Santa's design requirements, ...
12
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6answers
9k views

A radar-invisible stealth car?

It's common knowledge that one of the things that makes stealth aircraft so stealthy is that the body is covered in a skin of special material that interferes with radar. Would it be theoretically ...
11
votes
7answers
1k views

Clockwork vehicles

Any suggestions on ways to power large-scale clockwork vehicles? I'm building a world with highly advanced mechanical technology in a D&D-esque fantasy setting, but I haven't decided how to fuel ...
10
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5answers
4k views

A “time capsule” that can last for trillions of years?

The universe is dying because it has exhausted nearly all of its resources. Humans became the last species in the universe because of their resilience and sheer willpower. And yet, humanity still ...
10
votes
8answers
2k views

Low Gravity Urban Combat Tank

Which would work better for a small tank designed for urban use on low gravity worlds (inside cities on moons and such) tracks, wheels or something else?
9
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5answers
505 views

Would this “self driving” car work?

The great venture capitalist Elian Minsk has decided to start an "autonomous" car driving service. But who needs complicated AI based systems when he can hire tech support workers in India to drive ...
9
votes
3answers
1k views

Effects of ~10atm pressure on engine design

Take a planet with an atmosphere similar to Earth's but, say, 9-10x as dense. What is this going to mean for the performance and design of the heat engines that are so familiar to us? Higher oxygen ...
8
votes
8answers
3k views

Why develop AT-AT or AT-TE walkers? [duplicate]

After thinking about the issue of the development of this type of vehicles, I have some doubts about why the decision of this type of transport and not another. Realizing that AT-AT and AT-TE are ...
8
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5answers
1k views

What transportation for snow city?

Set on an icy world where weather forecast is alway blizzard everywhere, I am wondering how do modern day people commute if everywhere are buried under several miles of snow? What kind of ...
8
votes
10answers
2k views

Are supersonic submarine trains necessary in a civilization that spans a galaxy

A galaxy wide civilization with starships. Would a single planet benefit from supersonic submarine trains to go from continent to continent. Supercavitation makes them faster than planes, but would a ...
8
votes
4answers
256 views

Propulsion Systems

In my world, 500 years in the future, my population fits anti-gravity engines to salvaged boats as a form of transport. These transports fly close to the Earth's surface and are powered by a highly ...
7
votes
7answers
1k views

Garish colors for vehicles in desert warfare operations

In a vast desert, several factions vie for dominance. The factions use giant tanks and advanced aircraft. All the factions have a common origin, but are now entrenched in their respective dogmas and ...
7
votes
11answers
3k views

What control method would make controlling a giant humanoid robot ridiculously easy for a complete novice?

So I have in mind a plot point in mind where my protagonist is elected to pilot a giant humanoid robot with flight capabilities - Kinda like a mobile suit from the Mobile Suit Gundam franchise. To ...
7
votes
8answers
1k views

Would a double-decker tri-articulated bus work effectively?

In my setting, the planet is grossly overpopulated. Vehicles are required to carry large loads of people from place to place. Bi-articulated buses are a necessity and have replaced regular buses as a ...
7
votes
3answers
2k views

Speed of vehicles built by humanoid giants

Let's imagine a race of Giants, with an average height three times that of a normal human being. Let's also imagine that these Giants are completely identical to humans, proportionately speaking... ...
7
votes
2answers
494 views

How practical is the sandcrawler as a vehicle?

A sandcrawler is is a tracked vehicle about 40 meters long, 20 meters tall, and 15 meters wide. It has a thick outer hull for protection from the elements. It has eight sets of tracks, four abreast ...
7
votes
3answers
259 views

Designing drop-pods for humans

With the increasing amount of sci-fi using drop-pods to get their soldiers on the ground I would like to look at the design and how a proper drop-pod should look. The look and shape of such a drop-...
7
votes
2answers
242 views

Landships on a Snowball Earth?

I've been playing a lot of Deserts of Kharak lately, and I am wondering if landships depicted in game, which are essentially seagoing ships on tracks, would work in a Snowball Earth scenario. By ...
6
votes
3answers
298 views

What would a car look like for an animal with eyes on the side of their heads?

Imagine an animal like a cow in regards to eye positioning; they can look forward to lessen their frontal blindspot a bit but assume that doing that for a prolonged amount of time is straining. What ...
6
votes
4answers
151 views

How would you design Turn-Signals on a Flying Car?

When designing a flying car intended for congested city routes with slow traffic, should turn signals indicate all possible directions. In most sci-fi, I've seen designs that have no turn-signals or ...
6
votes
2answers
116 views

How nimble can I make my aeroplanes?

Although I'm aware of the real life existence of aerosports involving planes, exactly how nimble can I expect my planes, of a similar size, to be. If I were to design or have a racing course for said ...
6
votes
4answers
259 views

How can I make a jetpack with supercooling?

So let's say I have a super cooling "battery" basically a brick that cools anything that touches one end of it to ~0k. Now, using handwavium I can thermally isolate it so that it doesn't just cool ...
6
votes
2answers
493 views

What would the “tanks” of an underwater race look like?

Note: Some answers will refer to not just tanks, as previously I asked about military vehicles in general, then edited it because it was too broad. So, right now I'm working on a project centred ...
6
votes
2answers
394 views

Monolithic vehicles vs a convoy; So you want to go on a road trip

The scenario; suddenly a modern human world finds their nice, simple, understandable spherical world/solar system going poof overnight, and it being replaced by a mine-crafting plane world. Everyone ...
6
votes
3answers
146 views

Navigating a sea of sulfur hexafluoride

Sulfur hexafluoride is pretty awesome. It is a gas six times denser than regular air, and thus you can actually make tinfoil "boats" float on it. It also makes your voice deep when you breathe it in. ...
6
votes
2answers
360 views

Consequences of Earth-like planet with denser atmosphere

Assumptions - atmospheric pressure is 3 atm, but partial pressure of oxygen is comparable to earth, the rest is mostly nitrogen. Planet is tidally locked and insignificantly heavier. (for simplicity ...
5
votes
7answers
932 views

What would be the ideal weapon for a light-combat tank?

Only a small number of these tanks are going to be produced, so cost isn't really an issue. They are light and fast, but need to be able to take out another light tank at a long range with a few ...
5
votes
4answers
357 views

Tech required for low-flying/hover vehicle

We're in a nearish-future metropolis and the secret police are starting to take control of the city. They have some new technology, including hoverbike-style vehicles (I imagine them as single-person ...
5
votes
5answers
287 views

Designing vehicles for different gravities

In my story, humans have colonized both a high-G and a low-G world in the same star system. How would surface vehicles have to be designed differently for practicality and economy on each of those ...
5
votes
3answers
339 views

Mechanically correct rotorcraft aerial ship

I am taking a page from the Anatomically Correct Series here. But instead of a living organism, I'd like to ask about a special kind of vessel. I like ships. They are big and confortable. They have ...
5
votes
6answers
170 views

Best type of vehicle propulsion for rough terrain

I have been trying to design an offroad/all-terrain/rough terrain type vehicle for a story but i am split on what type of propulsion it uses. The vehicle i envision is supposed to be able to race ...
5
votes
3answers
127 views

Wheel-based vehicle vs Ground-gliders

In a mostly snowy world (snow deserts, snow jungles, etc) with a few underground cities built with magitek, most popular vehicles are rovers/gliders (think speeder bike from Star Wars). Would there be ...
4
votes
7answers
1k views

Could a group of scientists repair a truck to run on steam?

It is currently the year 2059. 97 years ago, the Cuban Missile Crisis went hot, and nuclear war between the USA and USSR became a sudden reality. The people alive now are 3rd and 4th generation ...
4
votes
6answers
458 views

Causing motorcycle crashes with a sniper rifle, no evidence left

If you wanted to force motorcycles to crash utilizing a sniper rifle from no more than 800 yards, what part of the bikes would you aim for to not only cause the rider to lose control, but not leave ...
4
votes
1answer
219 views

Shape-shifting using particle-sized 'building blocks'

My fictional world has special sorts of vehicles that can shape-shift, using some sort of building blocks which are a few times larger than average molecules. These sorts of substances can rearrange ...