Musk was also into the solar panels and EVs so it's not all trash the planet. Even if living on Mars or Venus isn't practical we might develop interesting tech trying.
Not exactly, it was a normal solar panel business started by Elon's cousins (SolarCity), but it wasn't going well, and in the end it was bought by Tesla for much bigger money than it was worth (let's say it was a bailout for Elon). Today Tesla solar panels are maybe 0.1%-1% of the business, they stopped giving any data on it years ago.