The most recent business plan puts the project $13 billion more expensive than previous estimates.

March 11, 2018

They now have permission to begin digging at a site in DC.

February 20, 2018

Elon Musk isn't the only one venturing below Earth's surface.

January 2, 2018

To begin, he's putting humans on Mars and computers in our brains.

November 21, 2017

A top tech adviser from the administration offered a clarification.

November 14, 2017

"Should be 2 miles long in three or four months and hopefully stretch the whole 405 [north to south] corridor from [Los Angeles International Airport] to the 101 in a year or so."

October 29, 2017

Musk clarified that nothing is official just yet.

October 21, 2017

Elon Musk answers the question, "Why are you boring?"

October 14, 2017

Over the weekend he snapped a photo of a Model S in the tunnel system.

August 28, 2017