Just a reminder that reasonably minded shareholders would never take what Elon says as anything other than fluffery, and should refrain from making any financial decisions based on such fluff.
Seems like a couple people were working on this around the same time.
Extracts of the adrenal gland were first obtained by Polish physiologist Napoleon Cybulski in 1895.[94] These extracts, which he called nadnerczyna ("adrenalin"), contained adrenaline and other catecholamines.[95] American ophthalmologist William H. Bates discovered adrenaline's usage for eye surgeries prior to 20 April 1896.[96] In 1897, John Jacob Abel (1857–1938), the father of modern pharmacology, found a natural substance produced by the adrenal glands that he named epinephrine.
At least that switch is fast.