This was an April Fool’s Day offering from ThinkGeek that was turned into a real product to meet popular demand. I’d rank it second after the Tauntaun sleeping bag.
"Some of the more popular items, however, were made into actual products, such as "Canned Unicorn Meat", the cecaelia-themed "Tentacuddle Blanket", the Tauntaun sleeping bag, and the "Technomancer Hoodie"." https://en.wikipedia.org/wiki/ThinkGeek
Yes, but I do not give Musk credit for recognizing a good thing and then taking it from Tesla’s founders.