A video posted online Tuesday by an Instagram user with the handle Chicago_roy appears to show one of the new pickup trucks whizzing through an area of Hawthorne, California.
The billionaire technologist appeared on "The Joe Rogan Experience," saying: "I think people should be nice to each other."
The Tesla and Space X CEO was embroiled in a Twitter back-and-forth with users who were critical of a previous outburst.
One journalist, Elon Musk complained, had sent him a "mean tweet" on his birthday.
In a presentation in L.A. this week, Boring Company execs Elon Musk and Steve Davis made a sales pitch for the "weird little Disney ride in the middle of L.A."
Elon Musk on NASA: "As soon as you don't have any competition, the sense of urgency goes away."
Kayne West is "super chaaaaaarged" about his new Tesla.
"You can't have more clicks on fake news than real news," Musk said.
Move over Nigerian email scam, fraudsters have a new sneaky trick.