Ok, so what counts as an emergency to use those lanes differs between countries ... but it sure seems super weird to explain how "emergency due to hail" is only in the spot where there is no hail, and at the same time, right next to the overpass where it's actually hailing, "no emergency" ...
If you would stop due to hail under on overpass but not wherever else you would get caught in hail - you are stopping just to protect the car, not due to an emergency.
Hey, sexy bone-marrow pelvis, shake them atomic gains!
(OK, but like, if I produced synthetic plutonium I would make the box look like a chocolate box. Those workers & engineers deserve to have a fun work environment, engage in some shenanigans, make an oopsie from time to time.)
And, if I have to explain the joke: it's just E=mc² (the Einstein thing ... well, the Einstein's thing's approximation), the energy (E) is the same for all mass (m) since the c is a constant.
You get the same 21 billon kcal from 1g of apples as from 1g of plutonium.
And since it's usually well known humans do not devour mass into pure energy that might trigger ppls sense of humour.
(Additionally the idea of eating metal to seek nutrition might be funny, but we do need some metals \m/.)
Also "potential energy" phrase is weird in that context.
There are 2 different definitions of calorie.
This "fun fact" mixes up the two definitions
It's not even two definitions, the kcal is absolutely the same, it's just used to measure two different things (mass energy vs the sum of what an average human can extract via chemical processes). I see you def understand that, but it's not a different definition of a calorie (in the same way as length vs width of an object isn't a different definition of a metre).
I mean, you can heat any old rock & make it look like that ... what I'm saying is that every rock, when heated to 500+°C, will gain delicious orange flavour, but scientists don't want you to know that!!
Why not do it when the conditions are also bad (bad visibility, lots of water), why only in hailstorms?
Also, arent hailstorms usually accompanied by little to no rain (rain usually follows a hailstorm, not the other way around, idk/afaik)?
And if aquaplaning is a serious concern (in the current millennium) you are either driving way too fast for your car & tires or have really bad (or ornamental) tires.
Sure, road quality is a factor too, but if you adjusted your speed to the conditions, you would see any giant rivers/lakes in the middle of the road.
Generally you should anticipate aquaplaning at basically any moment - and adjust the speed to that.
(That is counting on how capable you car electronics are to compensate for basic stability & the fact that aquaplaning is not something you would expect to go on for 100+ meters – that's a lake, you should be able to spot it in time or you are again driving too fast for the visibility.)
The speed limit doesn't tell you how fast you can drive in any conditions.
(But modern highways will automatically lower speed limits if conditions are that bad, or at least try to, so there is less idiots driving at full speed bcs that is what they are used to.)
(Also, I didn't know modern windshields crack into more pieces what the old ones - structurally afaik they remained the same, and idk what legislature would show then to crack worse. Do you have any info on that? I don't know what to look for. Just looking at random pics it might be brand/money dependant unfortunately.)
Yeah, the first time I heard about that I wtf-ed too, surely they caution against it bcs some sole idiot did it that one time & now we all have to listen about how not to do that for the rest of time?
Nope, turns out ppl just do that.
If going into oncoming traffic would somehow save their cars from potential hail damage, they would do that too.
(Now, it's not just that people are idiots and/or car-brained, it's also the system that forces many to buy cars that represent a lot of their wealth/income and the repairs/maintenance can have significant affect on their disposable income too.)