Watch Elon Musk Unveil The New Tesla In True 'Iron Man' Fashion

On Thursday night with much pomp and circumstance, Elon Musk announced Tesla's new line of cars  -- the "Tesla D," which is actually an all-wheel-drive version of the Model S. We were there to witness the theatrics. Produced by Matt Johnston and Graham Flanagan. Follow BI Video: On Facebook Join the conversation about this story »