I wonder if there is any connection of this being on the front page today with this paper [0] being uploaded on arXiv today or if it's just pure coincidence.
What i think is super cool about h3(O) is that you have scalars, a vector and two spinors in one object with the jordan-product giving you all the products between them that have to do with triality. See section 3.4 of John Baez' paper on the octonions.