Musk tells of 'most difficult' year

Tesla CEO Elon Musk opened up in an interview with The New York Times.

“This past year has been the most difficult and painful year of my career,” he said. “It was excruciating.”

Racing to reach production targets at Tesla, Musk said he nearly missed his brother's wedding and spent his birthday in offices.

“It’s not been great, actually. I’ve had friends come by who are really concerned," he said when asked if the work has had a physical effect on him.

Musk and Tesla currently are facing lawsuits after the executive tweeted about potentially taking the company private.

Read more from The New York Times.