260 votes
Accepted

Are cars in Arizona melting in the 2018 summer heat?

The weather is not melting cars. But there was a big fire in Tucson and the heat from the fire melted plastic parts on a bunch of cars in the parking lot. The pictures in this article fairly clearly ...
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  • 7,458
113 votes
Accepted

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

tl;dr: The claimed range is 50% higher than the worst assumptions for battery production, and 500% higher than the best assumptions. But it's not an apples to apples comparison. Carbon emissions ...
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  • 9,269
94 votes
Accepted

Does saying "sorry" after an accident count as legal admission of fault?

I focused on the US for this answer. An apology does not automatically lead to the party being found guilty: The apology may not be admissible in court (but the laws are complicated, as usual). When ...
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  • 22.8k
89 votes

Did a Tesla car collide with a Russian robot?

It's a PR stunt, and a very bad one at that. There are several debunkings out there, e.g. from ElecTrek, or (the best IMHO) from DÆrik @ YouTube. Strongest points made by DÆrik: The press release by ...
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  • 18.8k
80 votes
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Is it true that there is not enough electricity to power all vehicles in the United States if they were electric?

tl;dr: The claim is false. The claim is that there would need to be six times as much electric generation, but if all cars in 2019 had been electric, only 1.43 times (43%) more generation would have ...
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  • 9,269
79 votes
Accepted

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

This is something of an urban myth - the drying time gains were made by using oven-dried enamel coatings on the parts that could withstand the required curing temperatures. The so-called "baked ...
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  • 1,076
76 votes
Accepted

Does the source code of the software for a high-end car contain on average around 100 million lines of code?

Ford has said that the F150 pickup has 150 million lines of code. According to the New York Times: Twenty years ago, cars had, on average, one million lines of code. The General Motors 2010 ...
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  • 98.2k
70 votes

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

In addition to all the other great answers there is one very important fact that's always ignored in these comparisons (Google translation, lightly corrected by me): The total emissions of petrol ...
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  • 679
69 votes

Is a woman more likely than a man to be seriously injured in a car crash of similar severity?

I remember reading this article at the time; these kinds of articles tend to be riddled with hyperbole and exaggeration. The article says 'But when a woman is involved in a car crash, she is 47% more ...
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  • 3,771
64 votes

Does China control 85% of the supply of rare metals used in lithium batteries?

...but China only has 37% of the world's reserves Michael Karnerfors has provided evidence that China produces 95% of the world's rare earth elements. However, China does not hold that much of the ...
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  • 1,073
59 votes
Accepted

Are recent claims from India of a car fueled by water and calcium carbide legitimate?

The car does not run on water. The article you link says quite clearly that "The car runs on acetylene gas". Acetylene is an explosive gas that is used for welding, and before the invention of ...
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  • 5,861
48 votes

Do women get cheaper car insurance?

It appears to be rational behavior for auto insurers to take a driver's gender into account when assessing the risk the driver presents to them and consequently how much they should charge that driver ...
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  • 1,935
45 votes

Does the source code of the software for a high-end car contain on average around 100 million lines of code?

LOC is a particularly bad metric, because it raises the question of what is a line of code. Do you include whitespace and comments? Compiler directives? Preprocessor definitions? How about lines ...
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  • 1,598
34 votes

Are cars in Arizona melting in the 2018 summer heat?

A search on https://tineye.com led me to this tweet by @AyeElleJay with the caption "Slimmmmm! Arizona weather real different 😩" against that image. Replies to the tweet questioned its validity, and ...
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  • 5,942
33 votes

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

If I'd spent 30 seconds looking instead of 2 minutes posting here I'd have found the answer on Snopes. Its an old legend dating back to at least 1978. Origins: This legend surfaced in print in ...
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  • 15.7k
30 votes
Accepted

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

And the mechanical friction caused by the alternator does not depend on whether electricity is being needed or not. Correct. In other words, when energy is not needed it is wasted Wrong. The ...
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30 votes

Is it true that there is not enough electricity to power all vehicles in the United States if they were electric?

No, about 40 to 60% Internal Combustion Engine (ICE) vehicles currently use 146 billion gallons of gasoline used each year annually. A gallon of gasoline represents about 33 kWh of energy. So all the ...
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  • 11.1k
27 votes

Does saying "sorry" after an accident count as legal admission of fault?

At least in Canada, no. Canada actually has an "Apology Act" that essentially says that you can apologize for something and that apology is not to be considered a confession, admission of fault/guilt....
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26 votes

Is sleeping in a car with the windows rolled up dangerous?

According to Measurement of air exchange rate of stationary vehicles and estimation of in-vehicle exposure (1998): The air exchange rates or air changes per hour (ACH) were measured under 4 ...
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  • 4,309
25 votes
Accepted

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

Mathematically accurate From Cornell University News: An acre of U.S. corn yields about 7,110 pounds of corn for processing into 328 gallons of ethanol. That's 3,225 kg and 1241 liters. Let's ...
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  • 10.1k
23 votes
Accepted

Did the US ban the Volkswagen XL1 for being too fuel efficient?

Safety rules According to a December 2013 article in USA Today, the XL1 cannot meet US safety rules. The latest teaser: XL1. It's a spaceship-like, ultra-high-mpg, plug-in diesel-electric hybrid. VW ...
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22 votes
Accepted

Do women get cheaper car insurance?

Yes, in general women do get cheaper car insurance. Some jurisdictions have banned this - several states in the US prohibit charging women more. Here is the EU guidance from 2012 where gender ...
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  • 4,309
21 votes
Accepted

Do Jet Skis produce in an hour equivalent pollution to 100,000km of a new/small car?

Driving a jet ski for one hour will produce the equivalent amount of pollution as driving a new car 100,000 km. This claim seems to be INCORRECT. First, the claim appears to be credited to Stienstra ...
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  • 29.8k
20 votes

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

While I don't know if this particular company is doing something useful or not, I can talk about what an aluminum battery could be used for in electric cars. In general, electric cars use lithium ion ...
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20 votes

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

IVL, the source of the 150 to 200 kilograms of CO2 figure, recently published a new study that ended up with a much lower estimate: 61-106kg per kWh of battery capacity, depending on the energy ...
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19 votes
Accepted

Does marijuana impair driving?

This is a thorny question, both because it is a politicized issue, and because the effects of cannabis use while driving are less well studied than the effects of alcohol, and appear to include a ...
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18 votes
Accepted

Do Chevrolet commercials feature "Real people. Not actors."?

Summary: Chevrolet explain that they took some effort to avoid actors, but further investigation found that some had appeared in the adverts. The "Real People, Not Actors" is a ad campaign which is ...
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  • 22.5k
18 votes
Accepted

Did Winston Churchill praise Rolls-Royce engines?

There is no reason to doubt that Churchill explicitly mentioned Rolls-Royce in the context of the quote. A Google Books search limited to books published before 1960 returns at least four publications ...
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  • 8,465
17 votes
Accepted

Are there lots worldwide filled with thousands of unsold new cars left to ruin?

Are there lots full of unsold cars? Yes Are those cars being left to ruin? Almost certainly not. Here is a much more reliable story about lots full of unsold cars, from Business Insider. However you ...
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  • 54.3k
17 votes

Has Pokémon Go caused hundreds of deaths?

This is the research paper in question. The research paper was just released Nov 18th, 2017. Typically it takes some time for a proper peer review, and with a proper peer review, the next step for ...
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  • 1,126

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