I had in mind this one, which contains a lengthy explanation of the unique game mechanics of the S-tank (which is then almost immediately falsified by what happens on screen :).

>>Ah, you have to love Swedish machinery.
>
>Yeah, the S-103 is very cool and it could have been the future if we
>hadn't managed to make better turrets. I always get the feeling I'm
>looking at something from Battletech, though the influences almost
>certainly go the other way.

(nod) There are an awful lot of vehicles in Battletech that are inspired by or references to various real-world 20th-century vehicles—the Hetzer, the Ontos, and the Partisan AA tank come to mind. Oddly, the Striker Light Tank, despite its curious resemblance to the real-world Stryker wheeled tank-ish-thing,* can't be a reference to same; the Battletech Technical Readout 3026 dates to more than a decade before the Stryker.

--G.
* technical term
-><-
Benjamin D. Hutchins, Co-Founder, Editor-in-Chief, & Forum Mod
Eyrie Productions, Unlimited http://www.eyrie-productions.com/
zgryphon at that email service Google has
Ceterum censeo Carthaginem esse delendam.

OK, OK, don't get excited, it's just an in-game nickname. World of Tanks has lots of those. I doubt the Wehrmacht called the real Jagdpanzer IV "Flatpanzer" either, nor did the Red Army refer to the SU-100Y prototype as "Box Tank". :)

--G.
Box Tenk stronk tenk!
-><-
Benjamin D. Hutchins, Co-Founder, Editor-in-Chief, & Forum Mod
Eyrie Productions, Unlimited http://www.eyrie-productions.com/
zgryphon at that email service Google has
Ceterum censeo Carthaginem esse delendam.

(I admit to a strange fondness for most of the community nicknames in WoT; in particular all the various riffs on Waffenträger, most notably "Waffletraktor", and of course "the Death Star" for the FV215b(183). And the Conqueror Gun Carriage Orbital Laser Cannon.)

--G.
-><-
Benjamin D. Hutchins, Co-Founder, Editor-in-Chief, & Forum Mod
Eyrie Productions, Unlimited http://www.eyrie-productions.com/
zgryphon at that email service Google has
Ceterum censeo Carthaginem esse delendam.

Don't forget the T-95, aka the "Doom Turtle."

--------------------------
CdrMike, Overwatch Reject

Not to be confused—confusingly—with the Tortoise, which is that tank's actual name. :)

--G.
-><-
Benjamin D. Hutchins, Co-Founder, Editor-in-Chief, & Forum Mod
Eyrie Productions, Unlimited http://www.eyrie-productions.com/
zgryphon at that email service Google has
Ceterum censeo Carthaginem esse delendam.

On the other hand, the one in the video you linked is an S1, which wasn't ever really a thing(one prototype was made), so calling THAT an "S-tank" might be excusable. But the 103, not so much. Incidentally, it never had a name as such, in contrast to the Patton or Leopard. Sweden has never been much for naming gear in that manner, up until quite recently. Tanks have been the "103" or the "81" or the "122" or similar, and other vehicles have been the BV(bandvagn, "tracked vehicle")206 or SF(stridsfordon, "combat vehicle") 90. The CV90 is/was further differenced by the gun carried, such as 30/35/40/120.

...!
Stoke Mandeville, Esq & The Victorian Ballsmiths
"Nobody Want Verdigris-Covered Balls!"

It's not even simply an in-game nickname. Heck, the folks at Bovington list "S-Tank" as an alternative name.

http://www.tankmuseum.org/museum-online/vehicles/object-e1995-105

Because it isn't, and has never been, "S-tank". As noted by Gryphon above, it was ALTERNATIVE S, for Swedish, that is to say a domestic tank in the procurement "competition". If the 103 is supposed to be the "S-tank", then the M60 Patton and Leopard 1 are "A-tank" and "T-tank", respectively, and if you try to argue THAT with anyone with any knowledge of tanks, they'll laugh at you.

...!
Stoke Mandeville, Esq & The Victorian Ballsmiths
"Nobody Want Verdigris-Covered Balls!"

Funnily enough, one thing the M60 wasn't officially called was "Patton". People call it that because it was descended from the M48 Patton, but officially it was merely, in the ineffable poetry of the Army's naming system, "105mm gun, full tracked, combat tank, M60". I guess someone decided that naming a fourth tank after George Patton would have been a bit silly. :)

(For that matter, the Leopard 1 wasn't really the first German tank to be called Leopard, despite the explicit number in its name. But I suppose it could be argued that it was, since the 1940s Leopard was canceled before it could go into production.)

--G.
-><-
Benjamin D. Hutchins, Co-Founder, Editor-in-Chief, & Forum Mod
Eyrie Productions, Unlimited http://www.eyrie-productions.com/
zgryphon at that email service Google has
Ceterum censeo Carthaginem esse delendam.

Well, I have to say that, yeah, I can see a fourth tank be named "Patton" would be somewhat silly. On the other hand, compared to "105mm gun, full tracked, combat tank, M60", Patton, or even Patton IV, isn't that bad...

...!
Stoke Mandeville, Esq & The Victorian Ballsmiths
"Nobody Want Verdigris-Covered Balls!"

Who knows, in the alternative realities where Sweden did choose either the A or T alternatives, people call the Swedish modified M60 the "A-tank" or the corresponding Leopard 1 the "T-tank".

-VR
And perhaps there is an alternate MoonEyes/Stoke Mandeville arguing that just because people shouldn't call it the "A-tank" because "There i no A-Tank"
"They copied all they could follow, but they couldn't copy my mind,
And I left 'em sweating and stealing a year and a half behind."

Or perhaps they understand that vehicles can be known by things other than official designations.

>Because it isn't, and has never been, "S-tank".

While it is not the _official_ name for the tank it is, however, a name the tank is known by.