https://www.cnbc.com/2018/10/22/elon-musk-rapid-transit-test-tunnel-under-la-opens-to-public-dec-10.html

Elon Musk tweeted that his Boring Company will unveil a stretch of a rapid-transit tunnel under Los Angeles to the public on Dec. 10.

What the company has previously termed a "test tunnel" in the southern suburb of Hawthorne, between downtown LA and Torrance, demonstrates the company's "Loop" system. People are whisked through the system's tunnels at up to 150 miles per hour.