Well only really Nintendo knows at this point.
GameXplain already did a video about the cracks in this video (Mario Kart size, and other inconsistencies).
PS your video did not work it seems.
But beside all that; I WISH it was, it looked good!
Ok you have my attention. Only confirm the Mario Kart size.
Noting that the size is of quite a bit and archiving is out of the question as an icon should be present then.
I want it to be real as most of us who have seen it for sure but I am skeptical.