Tesla CEO Musk Says Research Fab In Giga Texas Expected To Be About $3B Initiative; SpaceX Will Take Care Of Initial Phase Of Scaled Up Terafab; Says Planning To Use Intel's 14a Process; Says Most Of Our Long-Term Production Will Be Cybercab; The Only Human Driven Car In The Long Run Will Be The New Roadster; Says May Be Able To Debut New Roadster In A Month Or So