https://www.cnet.com/news/elon-musks-boring-company-sent-a-tesla-down-one-of-its-futuristic-tunnels/

The city of Chicago and Musk's tunneling startup announced this week that The Boring Company has been selected to build and operate an express service between the city center and O'Hare International Airport.

Musk originally conceived a network of tunnels that Los Angeles drivers could use to take an underground shortcut around traffic jams. The Boring Company has been building a demonstration tunnel beneath the California headquarters of SpaceX, another Musk joint.