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258 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 ...
Mark's user avatar
  • 7,767
116 votes
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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 ...
LShaver's user avatar
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94 votes
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Are roundabouts actually statistically safer than traditional traffic patterns?

Here is a study of traffic safety at roundabouts in Minnesota. In this study they looked at all roundabouts in Minnesota, and look at the recorded crash data at these sites, comparing the data before ...
TimRias's user avatar
  • 3,859
92 votes
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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 ...
Laurel's user avatar
  • 31.6k
88 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 ...
DevSolar's user avatar
  • 19k
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 ...
LShaver's user avatar
  • 10.2k
79 votes
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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 ...
motosubatsu's user avatar
  • 1,634
74 votes
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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 ...
DavePhD's user avatar
  • 107k
71 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 ...
YetiCGN's user avatar
  • 689
70 votes
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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 ...
thelawnet's user avatar
  • 5,294
65 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 ...
kingledion's user avatar
  • 1,103
59 votes
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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 ...
hdhondt's user avatar
  • 5,846
47 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 ...
Dan Romik's user avatar
  • 5,394
47 votes

Are roundabouts actually statistically safer than traditional traffic patterns?

Germany started to reintroduce roundabouts in 2000, so quite a lot of research has been done, and there is plenty of experience. The German "Bundesanstalt für Straßenwesen", federal road ...
Guntram Blohm's user avatar
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 ...
Graham's user avatar
  • 1,592
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 ...
IMSoP's user avatar
  • 9,005
34 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 ...
Paul Johnson's user avatar
  • 16.6k
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 ...
Schwern's user avatar
  • 20.2k
28 votes
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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 ...
CJR's user avatar
  • 5,721
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....
BruceWayne's user avatar
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 ...
CJR's user avatar
  • 5,721
24 votes
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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 ...
Brythan's user avatar
  • 10.2k
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 ...
user3757614's user avatar
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 ...
user2428118's user avatar
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 ...
pericles316's user avatar
  • 22.8k
18 votes
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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 ...
Schmuddi's user avatar
  • 9,508
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 ...
Edwin Buck's user avatar
  • 1,146
17 votes
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Is this accident footage authentic?

No, it is not a real accident. The advert was created by Foote, Cone & Belding (FCB), on behalf of the Western Cape Government and AT&T's #ItCanWait campaign. It is discussed in an AdWeek ...
Oddthinking's user avatar
  • 144k
17 votes
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Do car tires create more pollution than exhaust fumes?

tl;dr The study only focuses on particulate emissions. It does not take into account other forms of pollution. It does not claim all tire emissions are worse for the environment than all exhaust ...
Schwern's user avatar
  • 20.2k
15 votes
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Do cars drop 7% in value every month?

When buying a new car, a car will depreciate around 11% just driving it off the lot. However, after this first trip, the depreciation rate falls drastically. Rates of depreciation on cars are ...
DenisS's user avatar
  • 22.4k

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