Road vehicle with four wheels and an engine intended to be a means of transport.

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5
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199 views

Did Volkswagen, Chrysler and/or GM cut diesel tailpipe emissions by ~99% over a decade?

This article, dated Jan 5, 2014, makes a rather vague claim that Companies such as Volkswagen AG, Chrysler Group and General Motors have invested billions to make that happen, outfitting vehicles ...
12
votes
1answer
425 views

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

I recall this claim being published in a newspaper a while back but time has buried it in the Interwebs, though it does come up from time to time as e.g. Driving a jet ski for one hour will ...
4
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0answers
181 views

Is there a viable design for a thorium car that can run for 100 years without being refueled?

This article and included video from Young Turks claims that Laser Power Systems has produced a "concept for a car" which can run for 100 years on 8 grams of thorium without needing t be refueled. ...
3
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0answers
294 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 ...
20
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0answers
494 views

Is gearing down more energy efficient than braking?

When spotting a red light or similar, I often release the gas pedal, gear down and let the engine decelerate instead of pressing the brake pedal. I was taught that this was more energy efficient for ...
12
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2answers
8k views

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

This link came in an email that was getting passed around the office today: http://www.vincelewis.net/unsoldcars.html The premise is that car manufacturers, not wanting to dilute their inventory to ...
6
votes
1answer
380 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" ...
3
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0answers
356 views

Do car theft victims have to pay around 1,000 USD to have their cars returned in the US?

This Yahoo! news article says: The 30-year-old’s 2000 Monte Carlo was stolen from in front of his mother’s house last summer. Finally, several months later, Williams was told that his car had ...
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0answers
79 views

Can a car run on water? As per this experiment [duplicate]

The Agha Waqar's car that ran on water was a great news for a long time. Where a Pakistan based inventor invented a car that got all the power from water. He was using a water kit to get the energy. ...
15
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2answers
4k views

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

There are dozens of articles similar to this one floating around claiming the new Volkswagen XL1, which can get 300+ MPG (0.78 L/100 km) in ideal driving conditions, has been banned in the USA because ...
5
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0answers
147 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 ...
18
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2answers
1k 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
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0answers
148 views

Do directional (not asymmetric) tread patterns reduce hydroplaning?

Treaded tires are better than smooth (slicks) tires in the rain to reduce hydroplaning. What is the evidence the directional tires (not asymmetric tires) give measurably better performance? If you ...
4
votes
1answer
155 views

Are pets as bad for environment as cars?

In this article referring to a book the authors claim: Taking the dog for a walk to the store would seem like a more environmentally-friendly option than piling into the SUV. Not so, say ...
12
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0answers
226 views

Does a start-stop system for a combustion engine pay off?

A start-stop system stops the engine when the car comes to a halt, for example, in front of a traffic light or during a traffic jam. The engine automatically restarts when pressing the clutch or the ...
6
votes
1answer
523 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 ...
21
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2answers
1k views

Did Jean-Claude Van Damme do a suspended split between two trucks?

This Volvo Trucks ad shows actor and martial artist, Jean-Claude Van Damme, performing a suspended split between two moving trucks, driving in reverse. I tend to think that what we see in the video ...
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vote
0answers
289 views

Is driving an automatic or manual (stick) car statistically safer? [closed]

An argument at work is over whether manual cars are safer than automatic. Arguments for: manual drivers understand how the car works, switching gears becomes second-nature, less tendency to ...
12
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0answers
225 views

Is there a high ecological impact from buying a new car?

First, a disclaimer: this is my first question here, so please point out any deficiency so I can amend it. Here in Italy, the Government has a recurring policy (it is happening every 2/3 years now) ...
24
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1answer
3k views

Did 9/11 lead to many deaths due to car accidents “dwarfing” the attacks themselves?

Well-renowned security expert Bruce Schneier claims that In the months after 9/11, so many people chose to drive instead of fly that the resulting deaths dwarfed the deaths from the terrorist ...
-2
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1answer
317 views

Does HONDA have a model called CBR 660RR?

http://www.sagmart.com/news/Automobiles/honda-is-going-to-reveal-its-new-bike-cbr-600rr-this-december The design of this new CBR is awesome; you surely skip a beat when it passes through the ...
16
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1answer
1k views

Does marijuana impair driving?

Is the use of cannabis/marijuana/THC associated with risks when driving a motor vehicle, similar to impairment from the use of alcohol? The conclusions of public studies seem inconsistent. For ...
24
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1answer
6k views

Is using cruise-control dangerous in the rain?

A meme from Facebook with 62,000+ shares: Excellent Driving Tip: A 36 year old female had an accident several weeks ago. It was raining, though not excessively when her car suddenly began ...
9
votes
1answer
4k 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 ...
0
votes
1answer
436 views

Why are car seat belts mandatory in some countries? [closed]

Seat belts reduce serious crash-related injuries and deaths by about 50%. It is compulsory in some countries (several US states, Canada, Australia, most all of European countries, ...) and others are ...
8
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1answer
2k views

Are manual transmission cars stolen less?

There is a decent amount of anecdotal evidence about manual transmissions being a good anti-theft device - but are there any statistics? Here's a statistic-less article from MSN.com It's folk ...
6
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2answers
5k views

Is a repaired car tire as good as a new one?

I recently had one of my car tires punctured by a screw. It lost pressure only very slowly, it probably took a couple of days before I noticed the tire was below pressure. The guys from the tire ...
3
votes
1answer
870 views

Radiation dangers with GPS/navigation cellphone apps [closed]

From Wikipedia: Some national radiation advisory authorities... have recommended measures to minimize exposure to their citizens... Do not use telephone in a car without an external antenna I'd ...
2
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0answers
223 views

No kids under 13 in the front seat?

On various pages throughout its Web site, the (United States) National Highway Traffic Safety Administration warns against seating anyone in the front seat of an automobile [manufactured for sale in ...
3
votes
1answer
11k views

Do modern turbo-diesel car engines fail significantly more often than gasoline ones?

I've seen quite a few articles written on subject, mainly based on anecdotal evidence and with generally alarmistic tone. Allegedly modern turbo-diesel engines used in popular cars are much less ...
13
votes
2answers
731 views

Shouldn't an electric car be thermodynamically at a disadvantage towards one with a combustion engine?

I have the greatest respect for the work of the Rocky Mountain Institute, but this recent blog post triggered my general scepticism towards electric cars, or more specifically, their fuel efficiency. ...
24
votes
3answers
26k 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. ...
6
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1answer
1k views

Does putting a reflective screen inside your car against the windshield have a meaningful impact on internal temperature?

In southern climes one can see many such reflective screens on cars in parking lots. Not all drivers use them, but many do. Is there a meaningful impact on the internal temperature of your car? Does ...
5
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0answers
207 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 ...
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votes
1answer
1k views

Should you speed up driving over a pothole? [closed]

Whenever I'm driving and I see a pothole that I can't avoid, I slow down. A friend of mine though apparently speeds up and told me I should as well. His claim was that running over the pothole at a ...
15
votes
1answer
3k 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. ...
13
votes
0answers
6k views

Does shifting an Automatic Transmission vehicle into neutral at red lights save fuel? [closed]

In some U.S. jurisdictions, it is technically illegal to put a car in neutral gear while waiting at a red light. (Of course, a stick-shift can have the clutch in, but while on the road the gear shift ...
6
votes
2answers
3k views

Are Auto Manufacturers required under US Federal Law to provide parts for a set period of time?

Via snopes.com Message Board and here, and a similar question on mechanics.stackexchange.com: Auto manufacturers are required by US Federal Law to have parts available for any models they sold for ...
4
votes
1answer
297 views

Are “black-box” data recorders to be installed in all new US cars?

Occupy Corporatism reports: With complete disregard for driver privacy, the Obama administration gave their consent to the National Highway Traffic Safety Administration (NHTSA) to mandate black ...
8
votes
3answers
17k views

Does a turbo-charged engine require a “cooling down” period?

Some people are saying that after having driven a car with a turbo-charged engine, you need to let the engine run for several seconds (or even minutes) before switching off the engine. But nobody is ...
2
votes
1answer
3k views

Can a Renault Megane drive 1700 km with 1 tank?

source See the above advert which claims that Renault Megane can cover 1700km with one tank. According to this link the Megane model has a fuel tank capacity of 60 Liters. Can the Megane cover ...
34
votes
2answers
4k 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, ...
5
votes
2answers
1k views

Does the Lexus LFA need digital gauges because analogue ones are too slow?

I first heard this claim a few years ago on the Top Gear program from the BBC. Since then I keep hearing it whenever I hear the Lexus LFA discussed. From this February 2012 article: This ...
10
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0answers
2k views

Does locking your car doors reduce theft?

Almost everyone I know locks their car doors when they leave their vehicle for an extended time. However, I come from a country town and most people in that country town don't lock their car doors and ...
5
votes
2answers
5k views

Do you need to break in new engine on a car/bike for first 1,000 km by driving slowly and otherwise following manual's advice?

Normally car manuals say to let the car break in gently, not accelerating or breaking fast for first 1,000 km or driving below 80km/h. Is that really necessary in today's world? Is there any proof ...
2
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0answers
74 views

Should we heat up engines before driving a car? [duplicate]

Possible Duplicate: Is running the engine for five minutes before driving beneficial for the car? My wife, her dad, and my dad says so. They said that before you drive a car, you need to ...
7
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2answers
2k views

Will opening a car door at high speed cause a flip? [closed]

Driving in the car with a friend, I was bored and did the "Batcar" game. If you're not familiar, this essentially ends in the passengers of the car opening their doors while the car is moving if the ...
7
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2answers
735 views

Can turbines on the front of cars ever pay off? [closed]

This news article is proving to be quite controversial here. Basically it's an electric car with a turbine bolted onto the front. On the face of it sticking a turbine on the front is going to increase ...
3
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0answers
654 views

Are rear-end collisions more dangerous in Compressed Natural Gas (CNG) than Petrol cars?

Is it more dangerous to be in a passenger car with compressed natural gas than with a petrol fuel tank when it comes to rear-end collisions? Lawrence Godwin, on eZine claims there is a explosion risk ...
3
votes
1answer
473 views

Does Honda Civic CNG fare well in crash safety tests as claimed by its manufacturer?

Honda touts great safety for their Civic CNG, but I have second thoughts concerning their fuel tank's safety in rear-end collisions. I looked for some tests and data, but could not find anything ...