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How Far Can You Drive on Empty?

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Gas lines are currently stretched across New Jersey and other states hit by Hurricane Sandy. If you're struggling to find a place to fill up, you might be asking yourself this very question, which we originally posted last year.

It’s a question that plagues every driver: Just how far can you drive with your car’s “fuel empty” light illuminated? The detailed answer depends on all sorts of variables like the age and model of your car, how much weight you’re carrying, and what kind of driving you’re doing.

The more fun answer is “Find out the hard way!” Justin Davis runs a site called TankOnEmpty.com that lets drivers record just how far they’ve driven certain types of cars after their empty lights came on. You can poke around and see how your car has fared. The results are a little less than scientific, though. Even for a car with a large number of data points, the estimates aren’t super-precise. The Honda Civic, for example, has 248 entries and an average range of 44.38 miles after the light comes on, but the standard deviation of the data is almost 24 miles.

Of course, the major question in play asks when the car’s fuel light comes on in the first place. Sure, driving conditions and number of passengers will affect your car’s range after the light comes on, but if you can pinpoint how much gas is left in the tank when the warning appears, you can at least ballpark what sort of range you’ve got left.

Click and Clack of Car Talk fame have estimated that most cars’ “empty” lights come on once the gas level dips below an eighth of a tank or so, but they have also advocated driving until the light comes on, then immediately stopping to fill all the way up, and then comparing how much fuel your car took with the tank’s capacity published in your owner’s manual. Once you repeat this process a few times, you should have a pretty good estimate of how much gas is left.

If you’re a bit more daring, you can always try the tactic consumer reporter John Stossel employed for a 2008 piece for ABC’s 20/20. Stossel got behind the wheel of his minivan and drove until he ran out of gas. He ended up making it 65 miles after his gas dial claimed the car was empty, including 40 miles after his van’s computerized estimate of its remaining fuel range hit zero.

What about you? Have you ever pushed the limits of your car’s tank, like Cosmo Kramer did on that Seinfeld episode?

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travel
Why You Should Never Take Your Shoes Off On an Airplane
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What should be worn during takeoff?

Tony Luna:

If you are a frequent flyer, you may often notice that some passengers like to kick off their shoes the moment they've settled down into their seats.

As an ex-flight attendant, I'm here to tell you that it is a dangerous thing to do. Why?

Besides stinking up the whole cabin, footwear is essential during an airplane emergency, even though it is not part of the flight safety information.

During an emergency, all sorts of debris and unpleasant ground surfaces will block your way toward the exit, as well as outside the aircraft. If your feet aren't properly covered, you'll have a hard time making your way to safety.

Imagine destroying your bare feet as you run down the aisle covered with broken glass, fires, and metal shards. Kind of like John McClane in Die Hard, but worse. Ouch!

Bruce Willis stars in 'Die Hard' (1988)
20th Century Fox Home Entertainment

A mere couple of seconds delay during an emergency evacuation can be a matter of life and death, especially in an enclosed environment. Not to mention the entire aircraft will likely be engulfed in panic and chaos.

So, the next time you go on a plane trip, please keep your shoes on during takeoff, even if it is uncomfortable.

You can slip on a pair of bathroom slippers if you really need to let your toes breathe. They're pretty useless in a real emergency evacuation, but at least they're better than going barefoot.

This post originally appeared on Quora. Click here to view.

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Big Questions
Where Should You Place the Apostrophe in President's Day?
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Happy Presidents’ Day! Or is it President’s Day? Or Presidents Day? What you call the national holiday depends on where you are, who you’re honoring, and how you think we’re celebrating.

Saying "President’s Day" infers that the day belongs to a singular president, such as George Washington or Abraham Lincoln, whose birthdays are the basis for the holiday. On the other hand, referring to it as "Presidents’ Day" means that the day belongs to all of the presidents—that it’s their day collectively. Finally, calling the day "Presidents Day"—plural with no apostrophe—would indicate that we’re honoring all POTUSes past and present (yes, even Andrew Johnson), but that no one president actually owns the day.

You would think that in the nearly 140 years since "Washington’s Birthday" was declared a holiday in 1879, someone would have officially declared a way to spell the day. But in fact, even the White House itself hasn’t chosen a single variation for its style guide. They spelled it “President’s Day” here and “Presidents’ Day” here.


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Maybe that indecision comes from the fact that Presidents Day isn’t even a federal holiday. The federal holiday is technically still called “Washington’s Birthday,” and states can choose to call it whatever they want. Some states, like Iowa, don’t officially acknowledge the day at all. And the location of the punctuation mark is a moot point when individual states choose to call it something else entirely, like “George Washington’s Birthday and Daisy Gatson Bates Day” in Arkansas, or “Birthdays of George Washington/Thomas Jefferson” in Alabama. (Alabama loves to split birthday celebrations, by the way; the third Monday in January celebrates both Martin Luther King, Jr., and Robert E. Lee.)

You can look to official grammar sources to declare the right way, but even they don’t agree. The AP Stylebook prefers “Presidents Day,” while Chicago Style uses “Presidents’ Day.”

The bottom line: There’s no rhyme or reason to any of it. Go with what feels right. And even then, if you’re in one of those states that has chosen to spell it “President’s Day”—Washington, for example—and you use one of the grammar book stylings instead, you’re still technically wrong.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

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