Slate, a Jeff Bezos-backed startup, has unveiled a cheap, no-frills lightweight electric truck priced at just $20,000.

Elon Musk continues to flesh out his business campus outside Austin.

Elon Musk arrives for the president's address to a joint session of Congress. (Saul Loeb/Agence France-Presse/Getty Images) Elon Musk, wearing a suit and dark blue tie, just arrived to applause ...