Elon Musk teetered back and forth with Jeff Bezos for the title of the richest person in the world. One day it was Musk, the next it was Bezos and sometimes the gap between them seemed razor-thin. But today,

Doing that on a maiden flight would be unprecedented: that kind of partial reusability was pioneered by SpaceX, Elon Musk’s rocket firm, and it required several attempts before eventually sticking the landing in 2016.

Musk's Tesla stake rose by $111 billion — 65% — last year. All but $2 billion of Musk’s Tesla gain and about 98% of what other Tesla shareholders gained came after Election Day, when Musk began hanging out extensively with Donald Trump and started calling himself Trump’s “first buddy.