https://www.cnet.com/news/elon-musk-walks-length-of-boring-companys-disturbingly-long-la-tunnel/

"Walked full length of Boring Co tunnel under LA tonight. Disturbingly long. On track for opening party Dec 10. Will be very one-dimensional," he tweeted, referencing one of his "dad jokes" from last week's Recode Decode interview.

Musk also posted a video that takes us through the tunnel, which lies beneath the Hawthorne, California, headquarters of SpaceX. When complete, the test tunnel is expected to run for 2 miles.