Questions tagged [road-vehicles]

Use this tag for question about cars, trucks and other road transport.

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18
votes
1answer
6k views

Is a tow truck driver killed every six days on average in the US?

Along I-90 in Massachusetts (and I presume elsewhere in the state), there is a digital billboard which sometimes displays a message from the Massachusetts Department of Transportation that a tow truck ...
17
votes
1answer
1k views

Do Chevrolet commercials feature “Real people. Not actors.”?

Many Chevrolet commercials I have seen in the past few years have started off with the disclaimer: "Real People. Not Actors". They have several of these commercials such as this one and that one. ...
4
votes
1answer
1k views

Is it possible to disable a vehicle with microwave oven magnetron from that distance

In a well-known Youtube channel there is a scene where a scooter had some kind of short circuit caused by magnetron used as a weapon from a distance. I never saw this channel to have fakes but one guy ...
15
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2answers
1k views

Does lowering speed limits by 10 km/h have any impact on air pollution?

Europe has been under exceptional sunlight for the past ten days, cf. Eumetsat's picture. According to French media, this prevents smog from escaping major hubs. In an attempt to reduce this air ...
17
votes
0answers
5k views

Do gas pods improve fuel efficiency?

I ran into this claim today about detachable car fins, and was wondering if there is any validity to it: about a five percent reduction in drag and corresponding five percent boost in fuel ...
17
votes
3answers
2k views

Do electric cars create more fine dust pollution than comparable petrol cars?

According to this Flanders Today (a local Belgian newspaper) article a new small car on petrol in the city creates less fine dust than an electric car of average size. The researcher, Bruno Van ...
0
votes
0answers
93 views

Is ceramic window-tinting film the type of window-tinting film that is able to block the most percentage of UV radiations from entering a car?

I read on http://thespokaneshop.com/spokane-window-tinting/different-types-window-tint-film (mirror): Ceramic film is also most effective in its blocking of ultraviolet light from the interior; in ...
34
votes
2answers
4k views

Does the 'two-second rule' provide a valid minimum gap for safe driving?

Most of us will have been taught the two-second rule when learning to drive. The two-second rule is a rule of thumb by which a driver may maintain a safe following distance at any speed. The rule ...
7
votes
0answers
540 views

Do “big-battery” electric vehicles release more CO2 than diesel equivalents over their lifetime?

Autocar report that Mazda have made a surprising claim about electric vehicles with larger batteries (i.e. 95kWh): Mazda says it will never build a ‘big-battery’ electric car, because it believes ...
1
vote
1answer
523 views

Are Teslas with autopilot system safer than vehicles without it?

An AP article describes some recent crashes that may have been linked to the Tesla autopilot system. The article states that there have been three fatal crashes since 2016 potentially linked to the ...
52
votes
3answers
5k views

Is using the A/C in a car less fuel efficient than having the windows down?

This is an age old debate that i have with a coterie of friends; without backing up with much scientific fact. It's all recently been based on arguments of experience. Is it possible that utilizing ...
101
votes
4answers
24k views

Does the production of a Tesla battery produce as much CO2 as driving 200,000 km?

Recently I read on Greenpeace's website, that the production of a 100 kWh battery, as in the Tesla Model S, produces as much CO2 as driving a regular car for 200,000 km. Source: Tesla car ...
20
votes
1answer
6k views

Did a man complain that his Pontiac wouldn't start whenever the ice cream he picked up was vanilla?

This story about a car that wouldn't start after its owner purchased vanilla ice cream has been used as an example of how customer service matters. (TL;DR The vanilla ice cream was faster to buy, so a ...
13
votes
2answers
2k views

Does lowering the legal BAC make driving safer?

Lower legal blood alcohol concentration limit laws are passed under the assumption that a lower legal limit will reduce the number of accidents. For example, the U.S government lowered the legal BAC ...
26
votes
3answers
9k views

Have more people been killed by automobiles than by all wars combined?

I read this claim somewhere recently, and a google search shows that it's occasionally made around the web, but was perhaps more common in the 1970's (many of the stories I find online are people ...
4
votes
1answer
726 views

Did hundreds of thousands of people die due to lack of seat belts in the period before they were made mandatory?

In a recent interview, Tesla founder Elon Musk gives a historical reference as example of slow government reaction to public harm: At 8m15s: Take something like seatbelts. It was known for, I ...
48
votes
2answers
18k views

Has an engineer called Trevor Jackson invented a revolutionary battery allowing for a car range of 1500 miles? [closed]

Since a few days several websites report about an alleged revolutionary electric vehicle fuel cell that enables 1500 miles range: Daily Mail Online StarCarSifu unserplanet.net Citing the Mail Online:...
16
votes
1answer
6k views

Does waxing your car have a long-term beneficial effect on the paint-work?

Everyone, especially people who love washing and waxing their cars, has been telling me about the long-term benefits of regular waxing. They tell me that the layer of wax acts as a protective shell ...
11
votes
1answer
2k views

Can Doom run on a car's infotainment system?

In this youtube video a hacker claims it is easily possible to mod the infotainment system in his Porsche to run the game Doom using the controls of his car to control the game. This Gizmodo/Sploid ...
3
votes
1answer
737 views

Is there more than one registered motor vehicle for every adult in the US?

According to the US Census Bureau's table of estimated population as of July 1 each year, there were 268.3M people 14 years of age or older, including 260.1M people 16 years of age or older, including ...
14
votes
1answer
2k views

Did Henry Ford ever say “any color he wants as long as it’s black”?

It's a common quote to attribute to him. Did he ever actually say/write it? A customer can have a car painted any color he wants as long as it’s black.
51
votes
2answers
10k views

Was the Ford Model T black because of the speed black paint dries?

In this BBC news article labour historian and lecturer Steve Babson says: The reason the Ford Model-T was black, was because it was the only paint that would dry fast enough to keep pace with the ...
11
votes
1answer
3k views

Did Winston Churchill praise Rolls-Royce engines?

In 1919, the world's first non-stop trans-Atlantic flight happened, and Rolls-Royce engines provided the power to make it happen. Marking the 100th anniversary of the 20th-century milestone, Rolls-...
4
votes
3answers
1k views

Is the Katy Freeway the widest in the world?

According to this source and several others (like Sylvester Turner, the mayor of Houston), a section of I-10 in West Houston called the Katy Freeway is the widest highway on Earth. Its widest point is ...
37
votes
1answer
87k views

Were there only two cars in Ohio in 1895, and they managed to crash into each other?

Currently on Today I Learned, Reddit. TIL [Today I Learned] In the entire state of Ohio in 1895, there were only two cars on the road, and the drivers of these two cars crashed into each other. ...
3
votes
1answer
426 views

Does the Sion electric car solar cells provide enough charge for up to 30km travel per day?

Sonomotors have an electric car, the Sion. They claim that this car use its own solar-cells to charge the batteries in one day sufficient to drive up to 34km. Their information sheet says: Thus, ...
2
votes
1answer
644 views

Did Dr Ulrich Mellinghoff Suggest 140Km/h would be a safer limit on Australian roads?

The description below has been shared by the Facebook group Sensible Speed Limits Australia which claims that Dr Ulrich Mellinghoff suggested 140km/h would be a safer speed limit in Australia. ...
6
votes
1answer
681 views

Is using a phone while driving more dangerous than driving while drunk?

There have been numerous studies that show how using a phone while driving is more distracting than other non-driving tasks and even worse than driving while intoxicated. Here was a study done in the ...
48
votes
3answers
7k views

Are speedometers designed to read high?

Via word-of-mouth, I have twice heard claims that speedometers are deliberately designed to read high, so manufacturers would not be subject to litigation for speeding. When I first heard this claim, ...
50
votes
1answer
12k views

Did a Tesla car collide with a Russian robot?

This story made the rounds in the news: a Tesla car "killed" an autonomous robot in Las Vegas in January 2019. There is some controversy about whether the incident was a real accident or a ...
15
votes
1answer
881 views

Are car headlights getting brighter?

This news story in Popular Science asks whether car headlights are getting brighter and concludes they are not: So are headlights actually getting brighter? The short answer is no—although there was ...
14
votes
2answers
810 views

Is the apparent drop in insect deaths on windshields due to a decline in insect populations?

The "windshield phenomenon" is a term given to the anecdotal observation that people tend to find fewer insects smashed on the windscreens of their cars now compared to a decade or several ...
8
votes
1answer
2k views

Did the Paul Walker crash happen at ~45 mph speed?

Heavy.com report that the car crash that killed actor Paul Walker was at about 40-45 miles per hour (64-72 km/h). They cite an NBCNews tweet: Update: Paul Walker was not drag racing at time of ...
19
votes
4answers
7k views

Does flooring the gas pedal reduce mileage?

Many websites that give tips on increasing mileage mention (typically in passing) that you should not accelerate hard. Examples include (from the first two google hits on "increase gas mileage") ...
29
votes
1answer
59k views

Will putting a car remote under your chin increase its range?

Image source: Miniseed blog I've heard this before and anecdotally have thought I've experienced it working, but I thought I'd ask here. Many years ago, someone told me that putting a car remote (...
21
votes
1answer
19k views

Is it illegal in any U.S. jurisdiction to be in neutral at a red light?

In this related question, I asserted that it was illegal to be in neutral gear while stopped at a red light. The first comment to that question challenged me to quote chapter and verse. Astonishingly,...
3
votes
2answers
886 views

Is this accident footage authentic?

This video about texting and driving shows footage of a car crash. Many posters on YouTube claim that it is "obvious" that the crash is fake. It is not obvious to me either way. Is this footage ...
41
votes
4answers
5k views

Is driving the speed limit on a highway safer?

I'd have thought this would have been asked already but I didn't see it. Is driving the speed limit safer on a highway? By "highway" I mean high-traffic areas, such as 4-lane divided thoroughfares. ...
24
votes
2answers
7k views

Are big cars and SUVs safer than small cars or do they just *feel* safer?

I've long observed that many drivers in the UK choose SUVs (which are often disparagingly called Chelsea Tractors) do so at least partially because they believe such cars to be safer. I doubt this ...
4
votes
1answer
364 views

Do cars produce more emissions idling than when in motion? [closed]

The author of this article claims that Cars produce more emissions when idling than when in motion. This seems like a patently false statement. How could cars produce more emissions when idling ...
6
votes
1answer
440 views

Does cryogenic treatment of automobile rotors increase performance?

In the performance brakes world, there is a small amount of debate about the benefits of cryogenically treating rotors, with most people believing that cryo treating rotors greatly improves their ...
7
votes
1answer
2k views

What is the real history behind of the Ford GAA engine?

I have been searching for quite some time trying to find out if what I have heard is true with the history of how the Ford GAA engine came to be. (Note: this site has some errors, such as its ...
24
votes
2answers
14k views

Can boiling water break car windows?

A friend of mine in Australia has heard from several of her friends that it's unsafe to pour boiling water on car windows in order to defrost them. Online examples of people claiming it's unsafe ...
11
votes
1answer
625 views

Is keyless theft/relay theft a practical threat for vehicles with fob/keyless entry?

Some sites, such as AutoExpress, are warning about a method of breaking into vehicles with keyless entry by capturing and relaying the fob's signal. To quote AutoExpress: The process criminals use ...
15
votes
1answer
1k views

Does one SUV tank of ethanol “take as much grain as could feed a person for a whole year?”

From The Great Transition, (c)2014, by Lester R. Brown (preface, page xiii): [F]illing the tank of a large SUV one time with ethanol takes as much grain as could feed a person for a whole year. ...
6
votes
0answers
690 views

“We have the right tires for your driving style.” [closed]

I saw an ad for a tire company today stating that they have the right tires for your driving style. When I buy tires I look for silent tires with long lifespan, good grip and most importantly a decent ...
11
votes
1answer
776 views

Are American standards on automotive turn signals demonstrably less safe than European ones?

In most countries outside North America, vehicles have separate turn signals which are amber rather than red. In the USA (and probably Canada) this is not part of the standards and a flashing brake ...
14
votes
1answer
6k views

Is a car's fuel consumption increased when the headlights are on?

I have read in many sites that a car with lights on will consume more fuel that with lights off. The (hand-waving) justifications that I see tend to mention that "energy has to come from somewhere" ...
91
votes
2answers
37k views

Are cars in Arizona melting in the 2018 summer heat?

Facebook just posted to my timeline this picture claiming that cars in Arizona are melting in the heat. Is it true?
18
votes
1answer
1k views

Does Ferrari cheat at track tests?

The article How Ferrari spins by Chris "Monkey" Harris contains claims that Ferrari has dishonest practices with the press. How bad has it been? I honestly don't know where to start. Perhaps the ...