The company he was CEO for less than a year before being ousted by the board? And was only CEO because he was associated with a company the owner of PayPal merged with (which he was also kicked out of).
From which Musk kicked out one of the original founders after buying his way to chairman of the board then slotting himself in as CEO. Not to mention that over the years, he's used the company for all sorts of fraud and smeared it in enough controversy for it to earn
a fairly large Wikipedia article about it.
SpaceX is one I have to give credit to him for because it's one he actually founded and seems to be doing pretty well.
Some bonus stupid ideas: the Hyperloop, which is expensive, impractical, and has already been outdone by transport systems that actually exists and are being used. Plus his recent attempt to solve traffic jams by digging a tunnel and filling it with Teslas that proceeded to experience a traffic jam.