05/12/2010 10:53 am ET | Updated May 25, 2011

Featured Doer: Elon Musk

Physicist. Entrepreneur. Philanthropist. Those titles don't usually mix together. But we're talking about Silicon Valley's Renaissance Man here, and with Musk, anything goes and everything fits. After all, the South African native is the co-founder of PayPal (imagine conducting online business without it), the CTO of SpaceX (a space transport company) and CEO and product architect of Tesla Motors (where he designed one of the first electric cars). He's probably investing on his newest venture as you read this.

Did we mention that he's also rocket scientist? And chairman of SolarCity, which sells and installs solar panels? The South African native just can't sit still, and we wouldn't have it any other way.

He is one of 15 candidates for a video interview in our HuffPost Spotlight Series, presented by HP. The top five question-getters will be interviewed using your questions.

Question submissions for the Spotlight Series are now closed. Thank you for your questions and stay tuned for our interviews with the top five question-getters!