Mr. Musk, the world’s richest man and the leader of Tesla and X, delivered a dark warning during an animated appearance at former President Donald J. Trump’s rally.

One of the richest men in the world, Elon Musk is so all-in on Trump that he might start knocking on doors in Pennsylvania himself.

Elon Musk and Gov. Josh Shapiro discussed the possibility of the tech mogul investing in Pennsylvania while the former attended a Steelers game. Musk, who serves as CEO of several companies, including electric vehicle giant Tesla,