Kathmandu,

August 2,

The father of business tycoon and CEO of Tesla Elon Musk said during an interview that he isn’t proud of his billionaire son, saying that Elon is unhappy with his own career progress.

On Monday, the 76-year-old spoke on the ‘Kyle and Jackie O's show' on the Australian radio station KIIS FM for a 20-minute interview, in which he talked about the Tesla chief and the rest of the Musk family, including Elon's younger brother, Kimbal. In the interview, Errol downplayed his billionaire son's success and took a dig at his physical appearance.