It might seem like a simple query - but according to the Tesla billionaire, it's particularly revealing.
Companies like Apple, Disney, IBM and Comcast are reported to have paused advertising on X since Media Matters released its report.
The test initially looked like it was going to be a success - until things started to go sideways.
After a failed first attempt, Elon Musk is shooting for the stars again.
The car was a 'dummy payload' for the first mission of SpaceX's Falcon Heavy
A former Tesla employee has opened up on life at the company